1. Department of Endocrinology; Peking University People's Hospital; Beijing China
2. Department of Endocrinology; Chinese PLA General Hospital; Beijing China
3. Department of Endocrinology; The Third Affiliated Hospital of Sun Yat-sen University; Guangzhou China
4. Department of Endocrinology; Shanghai 6th Hospital; Shanghai China
5. Department of Endocrinology; West China Hospital; Chengdu China
6. Department of Endocrinology; Nanjing Drum Tower Hospital; Nanjing China
7. Department of Endocrinology; Peking Union Medical College Hospital; Beijing China
8. Department of Endocrinology; Beijing Hospital; Beijing China