1. Chair of Endocrinology and Medical Sexology (ENDOSEX), Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
2. Department of Andrology, Xiyuan Hospital of China Academy of Chinese Medical Sciences, Beijing, China
3. Department of Urology, Xijing Hospital, Fourth Military Medical University, Xi’an, China
4. Department of Andrology, Xi’an Daxing Hospital affiliated to Yan’an University, Xi’an, China
5. Shanghai Key Laboratory of Reproductive Medicine, Department of Andrology, Center for Men’s Health, Urologic Medical Center, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
6. Department of Infertility and Sexual Medicine, 3rd Affiliated Hospital, Sun Yat-sen University, Guangzhou, China