1. Department of Endocrinology; Key Laboratory of Endocrinology of the Ministry of Health; Peking Union Medical College Hospital; Chinese Academy of Medical Sciences and Peking Union Medical College; Beijing China
2. First Clinical College of Nanjing Medical University; Nanjing Jiangsu China
3. University of Toronto; Toronto ON Canada
4. Shandong University School of Medicine; Jinan Shandong China