1. Department of Clinical Nutrition; Tongji Institute of Digestive Diseases; Tongji Hospital, Tongji University School of Medicine; Shanghai China
2. Department of Gastroenterology; Tongji Institute of Digestive Diseases; Tongji Hospital, Tongji University School of Medicine; Shanghai China
3. Key Laboratory of Gastroenterology & Hepatology; Ministry of Health; Division of Gastroenterology and Hepatology; Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease; Shanghai China