Affiliation: | 1. Department of Gastroenterology, Peking Union Medical College Hospital, Beijing 100730, China 2. Department of Gastroenterolgy, First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China 3. Department of Intensive Care, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China 4. Department of Gastroenterology-A31, The Cleveland Clinic Foundation, 9500 Euclid Ave, Cleveland OH 44195, USA |