Has an Observational Study of Early vs Elective Colonoscopy for Acute Lower Gastrointestinal Hemorrhage Answered Questions That Clinical Trials Could Not?
1 Division of Gastroenterology, Department of Medicine, Harborview Medical Center, University of Washington School of Medicine, Seattle, Washington.
2 Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana; Regenstrief Institute, Inc, Indianapolis, Indiana; Center for Innovation, Roudebush VA Medical Center, Indianapolis, Indiana.