Tongji University School of Medicine, Shanghai, 201318;
Outpatient Department, Jiangnan Shipyard Staff and Workers Hospital, Shanghai, 200040;
Department of Gastroenterology, Tenth People's Hospital Affiliated to Tongji University, Shanghai, 200072;
Department of Gastrointestinal Surgery, Ningbo First Hospital in Zhejiang Province, Ningbo, Zhejiang Province, 315700;
Department of Nursing, Tenth People's Hospital Affiliated to Tongji University, Shanghai, 200072;