1. Department of Epidemiology and Health Statistics, School of Public Health, Xinjiang Medical University, Urumqi, 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, Urumqi, 830054, China
3. Department of Gynecology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, 830054, China