1. Department of Endocrinology & Metabolism, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
2. Department of Endocrinology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
3. Department of Endocrinology and Metabolism, Hainan General Hospital, Haikou, Hainan, China
4. Women and Children’s Hospital, School of Medicine, Xiamen University, Xiamen, Fujian, China
5. Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark