Imuran Dosing in Crohn's Disease Study

Mt. Sinai Medical Center, New York

Long Island Clinical Research Assoc., Great Neck

University of Pittsburgh, Pittsburgh

Johns Hopkins University, Baltimore

University of North Carolina Chapel Hill, Chapel Hill

Atlanta Gastroenterology Associates, LLC, Atlanta

Cincinnati Children's Hospital, Cincinnati

Duluth Clinic, Duluth

Mayo Clinic, Rochester

University of Chicago Pediatric Gastroenterology, Chicago

University of Chicago, Chicago

Cedars-Sinai Medical Center, Los Angeles

University of Alberta, Edmonton

London Health Sciences Centre, London

Hospital for Sick Children, Toronto