1. Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
2. Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China
3. Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang, China
4. Cancer Epidemiology Division, Population Sciences in the Pacific Program, University of Hawaii Cancer Center, University of Hawaii at Manoa, Honolulu, HI, USA
5. Hospital Management Office, Shengjing Hospital of China Medical University, Shenyang, China
6. NHC Key Laboratory of Advanced Reproductive Medicine and Fertility (China Medical University), National Health Commission, Shenyang, China