1. Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Clinical Center for Diabetes, Department of Endocrinology and MetabolismShanghai Jiao Tong University Affiliated Sixth People's Hospital Shanghai China
2. Department of General SurgeryShanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine Shanghai China
3. Department of Endocrinology and Metabolism, Institute for Metabolic Diseases, Fengxian Central Hospital, Third School of Clinical MedicineSouthern Medical University Shanghai China