1. Department of Internal Medicine Hebei Medical University Shijiazhuang Hebei China
2. Department of Endocrinology Hebei General Hospital Shijiazhuang Hebei China
3. Department of Endocrinology Baoding First Central Hospital Baoding Hebei China
4. Key Laboratory of Endocrinology, Ministry of Health, Department of Endocrinology, Peking Union Medical College Hospital Chinese Academy of Medical Sciences Beijing China
5. Department of Endocrinology Cangzhou Central Hospital Cangzhou China
6. Hebei Key Laboratory of Metabolic Diseases Hebei General Hospital Shijiazhuang Hebei China
7. Department of Endocrinology and Metabolism Shandong Provincial Hospital Affiliated to Shandong University Jinan China