Pancreatology 2019 Oct 20;19(7):935-940. Epub 2019 Sep 20.
Department of Biliopancreatic Surgery, Xiangya Hospital, Central South University, Changsha, 410008, Hunan Province, China; Department of General Surgery, Xiangya Hospital, Central South University, Changsha, 410008, Hunan Province, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, Hunan Province, China.