1. Department of Epidemiology and Health Statistics, School of Public Health, Xinjiang Medical University, No.567 Shangde North Road, Ürümqi 830054, China
2. State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, School of Medical Engineering and Technology, Xinjiang Medical University, Ürümqi 830054, China
3. State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia/Department of Gynecology, The First Affiliated Hospital of Xinjiang Medical University, Ürümqi 830054, China