1. Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, China
2. Institute of Endocrinology and Metabolism Disease, Shandong University, Jinan, China
3. Key Laboratory of Endocrinology and Metabolism Disease, Shandong Province Medicine & Health, Jinan, China
4. Shantui Community Health Center, Jining, China
5. Department of Endocrinology, Second People's Hospital, Jining, China
6. Lukang Hospital, Jining, China
7. China National Heavy-Duty Truck Group Corporation Hospital, Jinan, China