1. Department of Endocrinology, Shandong Provincial Hospital, Shandong University, Jinan, Shandong 250021, China
2. Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, Shandong 250021, China
3. The First Affiliated Hospital of Shandong First Medical University, Jinan, Shandong 250014, China
4. Medical Science and Technology Innovation Center, Shandong First Medical University, Jinan, Shandong 250117, China