1. Department of Gastrointestinal Surgery; West China Hospital, Sichuan University; Chengdu China
2. Department of Pharmacy; West China Second University Hospital, Sichuan University; Chengdu China
3. Evidence-Based Pharmacy Center; West China Second University Hospital, Sichuan University; Chengdu China
4. Department of Digestive Surgery, State Key Laboratory of Cancer Biology, National Clinical Research Center for Digestive Diseases and Xijing Hospital of Digestive Diseases; Fourth Military Medical University; Xi'an China