Gastrointestinal Hemorrhage

• Los Angeles, California, United States
• San Diego, California, United States
• Cincinnati, Ohio, United States
• Philadelphia, Pennsylvania, United States

Not specified

• Brussels, Belgium
• Leuven, Belgium
• Liège, Belgium
• Angers, France

• Research Site — Hefei, Anhui, China
• Research Site — Beijing, Beijing Municipality, China
• Research Site — Chongqing, Chongqing Municipality, China
• Research Site — Fuzhou, Fujian, China

• Department of Surgery, United Christian Hospital — Hong Kong, China

• L.A. County + U.S.C. Medical Center — Los Angeles, California, United States

• Lotung Poh-Ai hospital — Yilan, Taiwan

• The Aga Khan University Hospital — Karachi, Sindh, Pakistan

• Department of Surgery, Kwong Wah Hospital — Hong Kong, China