1. Department of Clinical Epidemiology, Shengjing Hospital of China Medical University , Shenyang, China
2. Liaoning Key Laboratory of Precision Medical Research on Major Chronic Disease , Liaoning, China
3. Department of Urology, Shengjing Hospital of China Medical University , Shenyang, China
4. Center for Reproductive Medicine, Shengjing Hospital of China Medical University , Shenyang, China
5. Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University , Shenyang, China
6. Key Laboratory of Reproductive and Genetic Medicine (China Medical University), National Health Commission , Shenyang, China