[1] Sichuan Univ, West China Hosp, Dept Gen Surg, Div Gastrointestinal Surg, Chengdu, Peoples R China
[2] Chengdu Univ Tradit Chinese Med, Sch Pharm, Chengdu, Peoples R China
[3] Deyang Peoples Hosp, Dept Gen Surg Hepatopancreatobiliary Surg, Deyang, Peoples R China
[4] Hosp Chengdu Univ Tradit Chinese Med, Dept Ophthalmol, Chengdu, Peoples R China