Department of Emergency, People's Hospital, Inner Mongolia Medical University, Inner Mongolia Hohhot 010020;
Department of General Surgery, Beihai People 's Hospital, Beihai Guangxi 536000;
Department of Gastroenterology, Guangxi Beihai Chinese Medicine Hospital, Beihai Guangxi 536000;
Department of Endocrinology, People's Hospital, Inner Mongolia Medical University, Inner Mongolia Hohhot 010020;