Siregar, L.; Rani, A. A.; Manan, C.; Simadibrata, M.; Makmun, D. Clinical Profile and Outcome of Non-Variceal Upper Gastrointestinal Bleeding in Relation to Timing of Endoscopic Procedure in Patients Undergoing Elective Endoscopy. InaJGHE 2011, 12, 140-145.