An evidence-based approach to studies of the natural history of gastrointestinal diseases: recurrence of symptomatic Crohn's disease after surgery.
Lewis
James D
JD
Department of Medicine, and Center for Clinical Epidemiology and Biostatistics, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104-6021, USA. jlewis@cceb.med.upenn.edu
Schoenfeld
Philip
P
Lichtenstein
Gary R
GR
D000328:Adult; D003424:Crohn Disease / Q000601:surgery*; D019317:Evidence-Based Medicine; D005260:Female; D006801:Humans; D016247:Information Storage and Retrieval; D011379:Prognosis; D012008:Recurrence