1. Department of Endocrinology, Chinese PLA General Hospital, Beijing 100853, China
2. Department of Endocrinology, Peking University the Third Hospital, Beijing 100191, China
3. Department of Endocrinology, Drum Tower Hospital, Affiliated to Medical College of Nanjing University, Nanjing 210008, China
4. Department of Endocrinology, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
5. Department of Endocrinology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200025, China