1. Ren Ji Hospital, School of Medicine, Department of Clinical Nutrition, Shanghai Jiao Tong University, Shanghai, China
2. Department of Nutritional Sciences, The Pennsylvania State University, University Park
3. Ren Ji Hospital, School of Medicine, Department of Digestion, Shanghai Jiao Tong University, Shanghai, China
4. Ren Ji Hospital, School of Medicine, Department of Health Management, Shanghai Jiao Tong University, Shanghai, China