Marian Pfefferkorn

  • 3443 Citations
  • 32 h-Index
20012019

Research output per year

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Publications

  • 3443 Citations
  • 32 h-Index
  • 75 Article
  • 3 Chapter
  • 2 Review article
  • 1 Editorial
2019

Clinical and biological predictors of response to standardised paediatric colitis therapy (PROTECT): a multicentre inception cohort study

Hyams, J. S., Davis Thomas, S., Gotman, N., Haberman, Y., Karns, R., Schirmer, M., Mo, A., Mack, D. R., Boyle, B., Griffiths, A. M., LeLeiko, N. S., Sauer, C. G., Keljo, D. J., Markowitz, J., Baker, S. S., Rosh, J., Baldassano, R. N., Patel, A., Pfefferkorn, M., Otley, A. & 30 others, Heyman, M., Noe, J., Oliva-Hemker, M., Rufo, P. A., Strople, J., Ziring, D., Guthery, S. L., Sudel, B., Benkov, K., Wali, P., Moulton, D., Evans, J., Kappelman, M. D., Marquis, M. A., Sylvester, F. A., Collins, M. H., Venkateswaran, S., Dubinsky, M., Tangpricha, V., Spada, K. L., Saul, B., Wang, J., Serrano, J., Hommel, K., Marigorta, U. M., Gibson, G., Xavier, R. J., Kugathasan, S., Walters, T. & Denson, L. A., Apr 27 2019, In : The Lancet. 393, 10182, p. 1708-1720 13 p.

Research output: Contribution to journalArticle

18 Scopus citations

Mental Health Screening as the Standard of Care in Pediatric Inflammatory Bowel Disease

Bennett, W. E. & Pfefferkorn, M., Jan 1 2019, (Accepted/In press) In : JAMA Pediatrics.

Research output: Contribution to journalEditorial

Ulcerative colitis mucosal transcriptomes reveal mitochondriopathy and personalized mechanisms underlying disease severity and treatment response

Haberman, Y., Karns, R., Dexheimer, P. J., Schirmer, M., Somekh, J., Jurickova, I., Braun, T., Novak, E., Bauman, L., Collins, M. H., Mo, A., Rosen, M. J., Bonkowski, E., Gotman, N., Marquis, A., Nistel, M., Rufo, P. A., Baker, S. S., Sauer, C. G., Markowitz, J. & 22 others, Pfefferkorn, M. D., Rosh, J. R., Boyle, B. M., Mack, D. R., Baldassano, R. N., Shah, S., Leleiko, N. S., Heyman, M. B., Grifiths, A. M., Patel, A. S., Noe, J. D., Aronow, B. J., Kugathasan, S., Walters, T. D., Gibson, G., Thomas, S. D., Mollen, K., Shen-Orr, S., Huttenhower, C., Xavier, R. J., Hyams, J. S. & Denson, L. A., Dec 1 2019, In : Nature communications. 10, 1, 38.

Research output: Contribution to journalArticle

Open Access
18 Scopus citations

Variation in care in the management of children with Crohn's disease: Data from a multicenter inception cohort study

Krishnakumar, C., Ballengee, C. R., Liu, C., Kim, M. O., Baker, S. S., Baldassano, R. N., Cohen, S. A., Crandall, W. V., Denson, L. A., Dubinsky, M. C., Evans, J., Gokhale, R., Griffiths, A., Guthery, S. L., Oliva-Hemker, M., Heyman, M. B., Keljo, D., Kellermayer, R., Leleiko, N. S., Mack, D. R. & 15 others, Markowitz, J. F., Moulton, D. E., Noe, J. D., Otley, A. R., Patel, A. S., Pfefferkorn, M., Rabizadeh, S., Rosh, J. R., Snapper, S., Walters, T. D., Ziring, D., Mondal, K., Kappelman, M. D., Hyams, J. S. & Kugathasan, S., Jun 18 2019, In : Inflammatory bowel diseases. 25, 7, p. 1208-1217 10 p.

Research output: Contribution to journalArticle

4 Scopus citations
2018

Biologics Delay Progression of Crohn's Disease, but Not Early Surgery, in Children

Kerur, B., Machan, J. T., Shapiro, J. M., Cerezo, C. S., Markowitz, J., Mack, D. R., Griffiths, A. M., Otley, A. R., Pfefferkorn, M. D., Rosh, J. R., Keljo, D. J., Boyle, B., Oliva-Hemker, M., Kay, M. H., Saeed, S. A., Grossman, A. B., Sudel, B., Kappelman, M. D., Schaefer, M., Tomer, G. & 4 others, Bousvaros, A., Lerer, T., Hyams, J. S. & LeLeiko, N. S., Sep 2018, In : Clinical Gastroenterology and Hepatology. 16, 9, p. 1467-1473 7 p.

Research output: Contribution to journalArticle

16 Scopus citations

Compositional and Temporal Changes in the Gut Microbiome of Pediatric Ulcerative Colitis Patients Are Linked to Disease Course

Schirmer, M., Denson, L., Vlamakis, H., Franzosa, E. A., Thomas, S., Gotman, N. M., Rufo, P., Baker, S. S., Sauer, C., Markowitz, J., Pfefferkorn, M., Oliva-Hemker, M., Rosh, J., Otley, A., Boyle, B., Mack, D., Baldassano, R., Keljo, D., LeLeiko, N., Heyman, M. & 8 others, Griffiths, A., Patel, A. S., Noe, J., Kugathasan, S., Walters, T., Huttenhower, C., Hyams, J. & Xavier, R. J., Oct 10 2018, In : Cell Host and Microbe. 24, 4, p. 600-610.e4

Research output: Contribution to journalArticle

22 Scopus citations

Enhanced Contribution of HLA in Pediatric Onset Ulcerative Colitis

Venkateswaran, S., Prince, J., Cutler, D. J., Marigorta, U. M., Okou, D. T., Prahalad, S., Mack, D., Boyle, B., Walters, T., Griffiths, A., Sauer, C. G., Leleiko, N., Keljo, D., Markowitz, J., Baker, S. S., Rosh, J., Pfefferkorn, M., Heyman, M. B., Patel, A., Otley, A. & 10 others, Baldassano, R., Noe, J., Rufo, P., Oliva-Hemker, M., Davis, S., Zwick, M. E., Gibson, G., Denson, L. A., Hyams, J. & Kugathasan, S., Mar 19 2018, In : Inflammatory bowel diseases. 24, 4, p. 829-838 10 p.

Research output: Contribution to journalArticle

5 Scopus citations

Safety and Pharmacokinetic Study of Fidaxomicin in Children With Clostridium difficile-Associated Diarrhea: A phase 2A multicenter clinical trial

O'Gorman, M. A., Michaels, M. G., Kaplan, S. L., Otley, A., Kociolek, L. K., Hoffenberg, E. J., Kim, K. S., Nachman, S., Pfefferkorn, M. D., Sentongo, T., Sullivan, J. E. & Sears, P., Jan 1 2018, In : Journal of the Pediatric Infectious Diseases Society. 7, 3, p. 210-218 9 p.

Research output: Contribution to journalArticle

7 Scopus citations

Serologic Reactivity Reflects Clinical Expression of Ulcerative Colitis in Children

Spencer, E. A., Davis, S. M., Mack, D. R., Boyle, B. M., Griffiths, A. M., Leleiko, N. S., Sauer, C. G., Keljo, D. J., Markowitz, J. F., Baker, S. S., Rosh, J. R., Baldassano, R. N., Oliva-Hemker, M., Pfefferkorn, M. D., Otley, A. R., Heyman, M. B., Noe, J. D., Patel, A. S., Rufo, P. A., Benkov, K. & 16 others, Evans, J., Guthery, S., Kappelman, M., Moulton, D., Strople, J., Sudel, B., Wali, P., Ziring, D., Tangpricha, V., Marquis, M. A., Walters, T. D., Collins, M. H., Kugathasan, S., Denson, L. A., Hyams, J. S. & Dubinsky, M. C., May 18 2018, In : Inflammatory bowel diseases. 24, 6, p. 1335-1343 9 p.

Research output: Contribution to journalArticle

1 Scopus citations

The Effect of Early-Life Environmental Exposures on Disease Phenotype and Clinical Course of Crohn’s Disease in Children

Lindoso, L., Mondal, K., Venkateswaran, S., Somineni, H. K., Ballengee, C., Walters, T. D., Griffiths, A., Noe, J. D., Crandall, W., Snapper, S., Rabizadeh, S., Rosh, J. R., LeLeiko, N., Guthery, S., Mack, D., Kellermayer, R., Gulati, A. S., Pfefferkorn, M. D., Moulton, D. E., Keljo, D. & 17 others, Cohen, S., Oliva-Hemker, M., Heyman, M. B., Otley, A., Baker, S. S., Evans, J. S., Kirschner, B. S., Patel, A. S., Ziring, D., Stephens, M. C., Baldassano, R., Dubinsky, M. C., Markowitz, J., Denson, L. A., Hyams, J., Kugathasan, S. & Ananthakrishnan, A. N., Oct 1 2018, In : American Journal of Gastroenterology. 113, 10, p. 1524-1529 6 p.

Research output: Contribution to journalArticle

9 Scopus citations
2017

Factors associated with early outcomes following standardised therapy in children with ulcerative colitis (PROTECT): a multicentre inception cohort study

Hyams, J. S., Davis, S., Mack, D. R., Boyle, B., Griffiths, A. M., LeLeiko, N. S., Sauer, C. G., Keljo, D. J., Markowitz, J., Baker, S. S., Rosh, J., Baldassano, R. N., Patel, A., Pfefferkorn, M., Otley, A., Heyman, M., Noe, J., Oliva-Hemker, M., Rufo, P., Strople, J. & 23 others, Ziring, D., Guthery, S. L., Sudel, B., Benkov, K., Wali, P., Moulton, D., Evans, J., Kappelman, M. D., Marquis, A., Sylvester, F. A., Collins, M. H., Venkateswaran, S., Dubinsky, M., Tangpricha, V., Spada, K. L., Britt, A., Saul, B., Gotman, N., Wang, J., Serrano, J., Kugathasan, S., Walters, T. & Denson, L. A., Dec 2017, In : The Lancet Gastroenterology and Hepatology. 2, 12, p. 855-868 14 p.

Research output: Contribution to journalArticle

16 Scopus citations

Histologic Correlates of Clinical and Endoscopic Severity in Children Newly Diagnosed with Ulcerative Colitis

Boyle, B., Collins, M. H., Wang, Z., MacK, D., Griffiths, A., Sauer, C., Markowitz, J., Leleiko, N., Keljo, D., Rosh, J., Baker, S. S., Pfefferkorn, M., Heyman, M., Patel, A., Baldassano, R., Noe, J., Rufo, P., Kugathasan, S., Walters, T., Denson, L. & 1 others, Hyams, J., Jan 1 2017, In : American Journal of Surgical Pathology. 41, 11, p. 1491-1498 8 p.

Research output: Contribution to journalArticle

11 Scopus citations

The Incidence of Low Seroimmunity to Hepatitis B Virus in Children with Inflammatory Bowel Disease

Watts, A., Bennett, W. E., Molleston, J. P., Gupta, S. K., Croffie, J. M., Waseem, S., McFerron, B. A., Steiner, S. J., Kumar, S., Vanderpool, C. P., Hon, E. C., Bozic, M. A., Subbarao, G. C. & Pfefferkorn, M. D., Mar 22 2017, (Accepted/In press) In : Journal of Pediatric Gastroenterology and Nutrition.

Research output: Contribution to journalArticle

4 Scopus citations
2016
7 Scopus citations
2015

Clinical Presentation and Five-Year Therapeutic Management of Very Early-Onset Inflammatory Bowel Disease in a Large North American Cohort

Oliva-Hemker, M., Hutfless, S., Al Kazzi, E. S., Lerer, T., Mack, D., Leleiko, N., Griffiths, A., Cabrera, J., Otley, A., Rick, J., Bousvaros, A., Rosh, J., Grossman, A., Saeed, S., Kay, M., Carvalho, R., Keljo, D., Pfefferkorn, M., Faubion, W., Kappelman, M. & 4 others, Sudel, B., Schaefer, M. E., Markowitz, J. & Hyams, J. S., Sep 1 2015, In : Journal of Pediatrics. 167, 3, p. 527-532.e3

Research output: Contribution to journalArticle

39 Scopus citations

Concomitant Use of Immunomodulators Affects the Durability of Infliximab Therapy in Children With Crohn's Disease

Grossi, V., Lerer, T., Griffiths, A., LeLeiko, N., Cabrera, J., Otley, A., Rick, J., Mack, D., Bousvaros, A., Rosh, J., Grossman, A., Saeed, S., Kay, M., Boyle, B., Oliva-Hemker, M., Keljo, D., Pfefferkorn, M., Faubion, W., Kappelman, M. D., Sudel, B. & 2 others, Markowitz, J. & Hyams, J. S., Oct 1 2015, In : Clinical Gastroenterology and Hepatology. 13, 10, p. 1748-1756 9 p., 54359.

Research output: Contribution to journalArticle

42 Scopus citations

Dissecting allele architecture of early onset IBD using high-density genotyping

Rabizadeh, S., Noe, J., Snapper, S., Otley, A., Cohen, S., Oliva-Hemker, M., Kirschner, B., Ashish, P., Ziring, D., Evans, J., Baker, S., Cutler, D. J., Zwick, M. E., Okou, D. T., Prahalad, S., Walters, T., Guthery, S. L., Dubinsky, M., Baldassano, R., Crandall, W. V. & 25 others, Rosh, J., Markowitz, J., Stephens, M., Kellermayer, R., Pfefferkorn, M., Heyman, M. B., LeLeiko, N., Mack, D., Moulton, D., Kappelman, M. D., Kumar, A., Prince, J., Bose, P., Mondal, K., Ramachandran, D., Bohnsack, J. F., Griffiths, A. M., Haberman, Y., Essers, J., Thompson, S. D., Aronow, B., Keljo, D. J., Hyams, J. S., Denson, L. A. & Kugathasan, S., Jun 22 2015, In : PloS one. 10, 6, e0128074.

Research output: Contribution to journalArticle

24 Scopus citations
2014

Increased effectiveness of early therapy with anti-tumor necrosis factor-α vs an immunomodulator in children with Crohn's disease

Walters, T. D., Kim, M. O., Denson, L. A., Griffiths, A. M., Dubinsky, M., Markowitz, J., Baldassano, R., Crandall, W., Rosh, J., Pfefferkorn, M., Otley, A., Heyman, M. B., Leleiko, N., Baker, S., Guthery, S. L., Evans, J., Ziring, D., Kellermayer, R., Stephens, M., Mack, D. & 10 others, Oliva-Hemker, M., Patel, A. S., Kirschner, B., Moulton, D., Cohen, S., Kim, S., Liu, C., Essers, J., Kugathasan, S. & Hyams, J. S., Feb 2014, In : Gastroenterology. 146, 2, p. 383-391 9 p.

Research output: Contribution to journalArticle

125 Scopus citations

Liver enzyme elevations within 3 months of diagnosis of inflammatory bowel disease and likelihood of liver disease

Goyal, A., Hyams, J. S., Lerer, T., Leleiko, N. S., Otley, A. R., Griffiths, A. M., Rosh, J. R., Cabrera, J. M., Oliva-Hemker, M. M., Mack, D. R., Rick, J. N., Pfefferkorn, M. D., Carvalho, R., Grossman, A. B., Hitch, M. C., Sudel, B., Kappelman, M. D., Saeed, S. A., Faubion, W. A., Schaefer, M. E. & 2 others, Markowitz, J. F. & Keljo, D. J., Sep 2014, In : Journal of pediatric gastroenterology and nutrition. 59, 3, p. 321-323 3 p.

Research output: Contribution to journalArticle

10 Scopus citations

NASPGHAN clinical report on the evaluation and treatment of pediatric patients with internal penetrating crohn disease: Intraabdominal abscess with and without fistula

Pfefferkorn, M., Marshalleck, F. E., Saeed, S. A., Splawski, J. B., Linden, B. C. & Weston, B. F., Apr 24 2014, Biologic Treatment of Pediatric Inflammatory Bowel Disease: A Decade of JPGN Contributions. Wolters Kluwer Health Adis (ESP)

Research output: Chapter in Book/Report/Conference proceedingChapter

Retrospective cohort study of Methotrexate use in the treatment of pediatric Crohn's disease

Sunseri, W., Hyams, J. S., Lerer, T., Mack, D. R., Griffiths, A. M., Otley, A. R., Rosh, J. R., Carvalho, R., Grossman, A. B., Cabrera, J., Pfefferkorn, M. D., Rick, J., Leleiko, N. S., Hitch, M. C., Oliva-Hemker, M., Saeed, S. A., Kappelman, M., Markowitz, J. & Keljo, D. J., Aug 2014, In : Inflammatory bowel diseases. 20, 8, p. 1341-1345 5 p.

Research output: Contribution to journalArticle

22 Scopus citations
2013

NASPGHAN clinical report on the evaluation and treatment of pediatric patients with internal penetrating crohn disease: Intraabdominal abscess with and without fistula

Pfefferkorn, M. D., Marshalleck, F. E., Saeed, S. A., Splawski, J. B., Linden, B. C. & Weston, B. F., Sep 1 2013, In : Journal of pediatric gastroenterology and nutrition. 57, 3, p. 394-400 7 p.

Research output: Contribution to journalArticle

15 Scopus citations

Outcome following aminosalicylate therapy in children newly diagnosed as having ulcerative colitis

Zeisler, B., Lerer, T., Markowitz, J., MacK, D., Griffiths, A., Bousvaros, A., Keljo, D., Rosh, J., Evans, J., Kappelman, M., Otley, A., Kay, M., Grossman, A., Saeed, S., Carvalho, R., Oliva-Hemker, M., Faubion, W., Sudel, B., Pfefferkorn, M., Ashai-Khan, F. & 2 others, Leleiko, N. & Hyams, J., Jan 1 2013, In : Journal of pediatric gastroenterology and nutrition. 56, 1, p. 12-18 7 p.

Research output: Contribution to journalArticle

24 Scopus citations
2012

Budesonide use in pediatric crohn disease

Otley, A., Leleiko, N., Langton, C., Lerer, T., MacK, D., Evans, J., Pfefferkorn, M., Carvalho, R., Rosh, J., Griffiths, A., Oliva-Hemker, M., Kay, M., Bousvaros, A., Stephens, M., Samson, C., Grossman, A., Keljo, D., Markowitz, J. & Hyams, J., Aug 1 2012, In : Journal of pediatric gastroenterology and nutrition. 55, 2, p. 200-204 5 p.

Research output: Contribution to journalArticle

4 Scopus citations

Mathematical weighting of the pediatric Crohn's disease activity index (PCDAI) and comparison with its other short versions

Turner, D., Griffiths, A. M., Walters, T. D., Seah, T., Markowitz, J., Pfefferkorn, M., Keljo, D., Waxman, J., Otley, A., Leleiko, N. S., MacK, D., Hyams, J. & Levine, A., Jan 1 2012, In : Inflammatory bowel diseases. 18, 1, p. 55-62 8 p.

Research output: Contribution to journalArticle

93 Scopus citations
2011

Disorders of the Anorectum: Fissures, Fistulas, Prolapse, Hemorrhoids, Tags

Pfefferkorn, M. D. & Fitzgerald, J. F., Dec 1 2011, Pediatric Gastrointestinal and Liver Disease. Elsevier Inc., p. 521-527 7 p.

Research output: Chapter in Book/Report/Conference proceedingChapter

2 Scopus citations

Esophageal pH monitoring with the BRAVO capsule: Experience in a single tertiary medical center

Cabrera, J., Davis, M., Horn, D., Pfefferkorn, M. & Croffie, J. M., Oct 1 2011, In : Journal of pediatric gastroenterology and nutrition. 53, 4, p. 404-408 5 p.

Research output: Contribution to journalArticle

10 Scopus citations

Exploring potential noninvasive biomarkers in eosinophilic esophagitis in children

Subbarao, G., Rosenman, M. B., Ohnuki, L., Georgelas, A., Davis, M., Fitzgerald, J. F., Molleston, J. P., Croffie, J. M., Pfefferkorn, M. D., Corkins, M. R., Lim, J. R., Steiner, S. J., Schaefer, E., Gleich, G. J. & Gupta, S. K., Dec 1 2011, In : Journal of pediatric gastroenterology and nutrition. 53, 6, p. 651-658 8 p.

Research output: Contribution to journalArticle

39 Scopus citations

Outcome following thiopurine use in children with ulcerative colitis: A prospective multicenter registry study

Hyams, J. S., Lerer, T., MacK, D., Bousvaros, A., Griffiths, A., Rosh, J., Otley, A., Evans, J., Stephens, M., Kay, M., Keljo, D., Pfefferkorn, M., Saeed, S., Crandall, W., Michail, S., Kappelman, M. D., Grossman, A., Samson, C., Sudel, B., Oliva-Hemker, M. & 2 others, Leleiko, N. & Markowitz, J., May 1 2011, In : American Journal of Gastroenterology. 106, 5, p. 981-987 7 p.

Research output: Contribution to journalReview article

47 Scopus citations

Significance of esophageal Crohn disease in children

Ammoury, R. F. & Pfefferkorn, M. D., Mar 1 2011, In : Journal of pediatric gastroenterology and nutrition. 52, 3, p. 291-294 4 p.

Research output: Contribution to journalArticle

10 Scopus citations
2010

Appraisal of the pediatric crohn's disease activity index on four prospectively collected datasets: Recommended cutoff values and clinimetric properties

Turner, D., Griffiths, A. M., Walters, T. D., Seah, T., Markowitz, J., Pfefferkorn, M., Keljo, D., Otley, A., Leleiko, N. S., MacK, D., Hyams, J. & Levine, A., Sep 1 2010, In : American Journal of Gastroenterology. 105, 9, p. 2085-2092 8 p.

Research output: Contribution to journalArticle

80 Scopus citations

Extraintestinal manifestations of pediatric inflammatory bowel disease and their relation to disease type and severity

Dotson, J. L., Hyams, J. S., Markowitz, J., Leleiko, N. S., MacK, D. R., Evans, J. S., Pfefferkorn, M. D., Griffiths, A. M., Otley, A. R., Bousvaros, A., Kugathasan, S., Rosh, J. R., Keljo, D., Carvalho, R. S., Tomer, G., Mamula, P., Kay, M. H., Kerzner, B., Oliva-Hemker, M., Langton, C. R. & 1 others, Crandall, W., Aug 1 2010, In : Journal of pediatric gastroenterology and nutrition. 51, 2, p. 140-145 6 p.

Research output: Contribution to journalArticle

92 Scopus citations

Factors that determine risk for surgery in pediatric patients with crohn's disease

Schaefer, M. E., Machan, J. T., Kawatu, D., Langton, C. R., Markowitz, J., Crandall, W., Mack, D. R., Evans, J. S., Pfefferkorn, M. D., Griffiths, A. M., Otley, A. R., Bousvaros, A., Kugathasan, S., Rosh, J. R., Keljo, D. J., Carvalho, R. S., Tomer, G., Mamula, P., Kay, M. H., Kerzner, B. & 5 others, Oliva-Hemker, M., Kappelman, M. D., Saeed, S. A., Hyams, J. S. & LeLeiko, N. S., Sep 2010, In : Clinical Gastroenterology and Hepatology. 8, 9, p. 789-794.e2

Research output: Contribution to journalArticle

59 Scopus citations

Outcome following infliximab therapy in children with ulcerative colitis

Hyams, J. S., Lerer, T., Griffiths, A., Pfefferkorn, M., Stephens, M., Evans, J., Otley, A., Carvalho, R., MacK, D., Bousvaros, A., Rosh, J., Grossman, A., Tomer, G., Kay, M., Crandall, W., Oliva-Hemker, M., Keljo, D., Leleiko, N. & Markowitz, J., Jun 1 2010, In : American Journal of Gastroenterology. 105, 6, p. 1430-1436 7 p.

Research output: Contribution to journalArticle

93 Scopus citations

Utility of fecal lactoferrin in identifying crohn disease activity in children

Pfefferkorn, M. D., Boone, J. H., Nguyen, J. T., Juliar, B. E., Davis, M. A. & Parker, K. K., Oct 1 2010, In : Journal of pediatric gastroenterology and nutrition. 51, 4, p. 425-428 4 p.

Research output: Contribution to journalArticle

24 Scopus citations
2009

Age of diagnosis influences serologic responses in children with Crohn's disease: A possible clue to etiology?

Markowirz, J., Kugathasan, S., Dubinsky, M., Mei, L., Crandall, W., LeLeiko, N., Oliva-Hemker, M., Rosh, J., Evans, J., Mack, D., Otley, A., Pfefferkorn, M., Bahar, R., Vasiliauskas, E., Wahbeh, G., Silber, G., Quiros, J. A., Wrobel, I., Nebel, J., Landers, C. & 4 others, Picornell, Y., Targan, S., Lerer, T. & Hyams, J., Jul 17 2009, In : Inflammatory bowel diseases. 15, 5, p. 714-719 6 p.

Research output: Contribution to journalArticle

65 Scopus citations

Appraisal of the Pediatric Ulcerative Colitis Activity Index (PUCAI)

Turner, D., Hyams, J., Markowitz, J., Lerer, T., Mack, D. R., Evans, J., Pfefferkorn, M., Rosh, J., Kay, M., Crandall, W., Keljo, D., Otley, A. R., Kugathasan, S., Carvalho, R., Oliva-Hemker, M., Langton, C., Mamula, P., Bousvaros, A., LeLeiko, N. & Griffiths, A. M., Oct 5 2009, In : Inflammatory bowel diseases. 15, 8, p. 1218-1223 6 p.

Research output: Contribution to journalArticle

140 Scopus citations

Course and treatment of perianal disease in children newly diagnosed with Crohn's disease

Keljo, D. J., Markowitz, J., Langton, C., Lerer, T., Bousvaros, A., Carvalho, R., Crandall, W., Evans, J., Griffiths, A., Kay, M., Kugathasan, S., LeLeiko, N., Mack, D., Mamula, P., Moyer, M. S., Oliva-Hemker, M., Otley, A., Pfefferkorn, M., Rosh, J. & Hyams, J. S., Jul 17 2009, In : Inflammatory bowel diseases. 15, 3, p. 383-387 5 p.

Research output: Contribution to journalArticle

73 Scopus citations
5 Scopus citations

Functional gastrointestinal disorders: Past and present

Ammoury, R. F., Pfefferkorn, M. D. R. & Croffie, J. M., Jul 27 2009, In : World Journal of Pediatrics. 5, 2, p. 103-112 10 p.

Research output: Contribution to journalReview article

14 Scopus citations

Growth abnormalities persist in newly diagnosed children with crohn disease despite current treatment paradigms

Pfefferkorn, M., Burke, G., Griffiths, A., Markowitz, J., Rosh, J., MacK, D., Otley, A., Kugathasan, S., Evans, J., Bousvaros, A., Moyer, M. S., Wyllie, R., Oliva-Hemker, M., Carvalho, R., Crandall, W., Keljo, D., Walters, T. D., Leleiko, N. & Hyams, J., Feb 1 2009, In : Journal of pediatric gastroenterology and nutrition. 48, 2, p. 168-174 7 p.

Research output: Contribution to journalArticle

104 Scopus citations

Long-term outcome of maintenance infliximab therapy in children with Crohn's disease

Hyams, J. S., Lerer, T., Griffiths, A., Pfefferkorn, M., Kugathasan, S., Evans, J., Otley, A., Carvalho, R., Mack, D., Bousvaros, A., Rosh, J., Mamula, P., Kay, M., Crandall, W., Oliva-Hemker, M., Keljo, D., LeLeiko, N. & Markowitz, J., Jul 16 2009, In : Inflammatory bowel diseases. 15, 6, p. 816-822 7 p.

Research output: Contribution to journalArticle

136 Scopus citations

Retrospective evaluation of the safety and effect of adalimumab therapy (RESEAT) in pediatric crohns disease

Rosh, J. R., Lerer, T., Markowitz, J., Goli, S. R., Mamula, P., Noe, J. D., Pfefferkorn, M. D., Kelleher, K. T., Griffiths, A. M., Kugathasan, S., Keljo, D., Oliva-Hemker, M., Crandall, W., Carvalho, R. S., MacK, D. R. & Hyams, J. S., Dec 1 2009, In : American Journal of Gastroenterology. 104, 12, p. 3042-3049 8 p.

Research output: Contribution to journalArticle

95 Scopus citations

Variation in care in pediatric crohn disease

Colletti, R. B., Baldassano, R. N., Milov, D. E., Margolis, P. A., Bousvaros, A., Crandall, W. V., Crissinger, K. D., D'Amico, M. A., Day, A. S., Denson, L. A., Dubinsky, M., Ebach, D. R., Hoffenberg, E. J., Kader, H. A., Keljo, D. J., Leibowitz, I. H., Mamula, P., Pfefferkorn, M. D. & Qureshi, M. A., Sep 2009, In : Journal of pediatric gastroenterology and nutrition. 49, 3, p. 297-303 7 p.

Research output: Contribution to journalArticle

44 Scopus citations
2008

Appendiceal Orifice Inflammation and Ulcerative Proctitis

Pfefferkorn, M. D., Aug 1 2008, In : Clinical Gastroenterology and Hepatology. 6, 8, p. e31-e32

Research output: Contribution to journalArticle

Carbohydrate and lipid metabolism following infliximab therapy in pediatric Crohn's disease

Steiner, S. J., Pfefferkorn, M. D., Fitzgerald, J. F. & Denne, S. C., Dec 1 2008, In : Pediatric Research. 64, 6, p. 673-676 4 p.

Research output: Contribution to journalArticle

9 Scopus citations

Comparison of Oral Prednisone and Topical Fluticasone in the Treatment of Eosinophilic Esophagitis: A Randomized Trial in Children

Schaefer, E. T., Fitzgerald, J. F., Molleston, J. P., Croffie, J. M., Pfefferkorn, M. D., Corkins, M. R., Lim, J. D., Steiner, S. J. & Gupta, S. K., Feb 1 2008, In : Clinical Gastroenterology and Hepatology. 6, 2, p. 165-173 9 p.

Research output: Contribution to journalArticle

285 Scopus citations

Effect of early immunomodulator use in moderate to severe pediatric Crohn disease

Punati, J., Markowitz, J., Lerer, T., Hyams, J., Kugathasan, S., Griffiths, A., Otley, A., Rosh, J., Pfefferkorn, M., Mack, D., Evans, J., Bousvaros, A., Susan Moyer, M., Wyllie, R., Oliva-Hemker, M., Mezoff, A., Leleiko, N., Keljo, D. & Crandall, W., Jul 1 2008, In : Inflammatory bowel diseases. 14, 7, p. 949-954 6 p.

Research output: Contribution to journalArticle

94 Scopus citations
4 Scopus citations