1. Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China (mainland)
2. Department of Vascular Surgery, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China (mainland)
3. Department of Endocrinology, Qilu Hospital of Shandong University, Qingdao, Shandong, China (mainland)
4. Department of Endocrinology, The 401 Hospital of PLA, Qingdao, Shandong, China (mainland)
5. Department of Endocrinology, Weifang Hospital of Traditional Chinese Medicine, Weifang, Shandong, China (mainland)