1. Intensive Care Unit; Sichuan University; Chengdu Sichuan Province China
2. Nursing Section; Department of Gastroenterology; Sichuan University; Chengdu Sichuan Province China
3. Infusion Nursing I.V. Team; Sichuan University; Chengdu Sichuan Province China
4. Departments of Gastroenterology; Sichuan University; Chengdu Sichuan Province China
5. Gastrointestinal Surgery; West China Hospital; Sichuan University; Chengdu Sichuan Province China