1. Department of Endocrinology, The Second People's Hospital of Liaocheng, Linqing, Shandong 252601, P.R. China
2. Department of Endocrinology, Jiamusi Central Hospital, Jiamusi, Heilongjiang 154002, P.R. China
3. Department of Cardiology, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China
4. Department of Podiatry, 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, Key Laboratory of Hormones and Development (Ministry of Health), Metabolic Diseases Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, Hebei 300070, P.R. China
5. Department of Endocrinology, Tianjin First Central Hospital, Tianjin, Hebei 300192, P.R. China