1. Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology & Hepatology, Ministry of Health, Shanghai Institute of Digestive Disease, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
2. Department of Biostatistics, Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai, China
3. Department of Medicine, Michael E DeBakey Veterans Affairs Medical Center and Baylor College of Medicine, Houston, TX, USA
4. Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology & Hepatology, Ministry of Health, Shanghai Institute of Digestive Disease, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, 145 Middle Shandong Road, Shanghai 200001, China
5. Clinical Research Center, Shanghai Jiao Tong University School of Medicine, 555 Zhongshan South 2nd Rd, Xuhui Qu, Shanghai Shi, China