1. Department of Endocrinology and Metabolism, the 2nd Hospital Affiliated of Harbin Medical University, Harbin, China
2. Department of Endocrinology, Lu He hospital, Capital Medical University, Beijing, China
3. Beijing Key Laboratory of Diabetes Prevention and Research, Lu He hospital, Capital Medical University, Beijing, China
4. Department of Obstetrics and Gynecology, Lu He hospital, Capital Medical University, Beijing, China