Department of Gastroenterology, Affiliated Hospital of Shaoxing University, Shaoxing, Zhejiang 312000, China;
Department of Gastroenterology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200000, China;
Department of Geriatric Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China;
