1. School of Clinical Medicine, Weifang Medical University, Weifang, Shandong, China
2. Department of Endocrinology, Qingdao Central Hospital, Qingdao, Shandong, China
3. Department of Laboratory, Qingdao Central Hospital, Qingdao, Shandong, China
4. Department of Pharmacy, Qingdao Central Hospital, Qingdao, Shandong, China.