1. Department of Reproductive Medicine, Shenzhen Zhongshan Urology Hospital, Shenzhen, Guangdong, People’s Republic of China
2. Department of Laboratory Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People’s Republic of China
3. Department of Head and Neck Oncology, The Cancer Center of the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, Guangdong, People’s Republic of China
4. Department of Obstetrics and Gynecology, The Second Affiliated Hospital, Fujian Medical University, Quanzhou, Fujian, People’s Republic of China
5. Department of Preventive Medicine, School of Public Health, Fujian Medical University, Fuzhou, Fujian Province, People’s Republic of China