Institution: | (1) Department of Oncology, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China;(2) Department of Interventional Therapy, Peking University School of Oncology, Beijing Cancer Hospital and Institute, Beijing, 100142, China;(3) Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, Beijing Digestive Disease Center, #95 Yong An Road, Xuanwu District, Beijing, 100050, China;(4) Department of Gastroenterology, Qianfoshan Hospital, Jinan, 250014, Shandong, China; |