1. Department of Reproductive Medicine, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou 510080, China
2. Department of Reproductive Medicine, Dongguan Maternal & Child Healthcare Hospital, Dongguan 523000, China
3. Department of Obstetrics and Gynecology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510275, China
4. Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical University, Harbin 150088, China