1. Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China
2. Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
3. Department of Pathology, Affiliated Hospital of Weifang Medical University, Weifang, China
4. School of Pharmacy, Weifang Medical University, Weifang, China.