1. Department of Ultrasound, The First Affiliated Hospital of Anhui Medical University, Hefei, China
2. Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
3. Shandong Clinical Research Center of Diabetes and Metabolic Diseases, Jinan, China
4. Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, China
5. Department of Statistics and Medical Records Management, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China