1. Department of Andrology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
2. Reproductive Medicine Research Center, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou 510000, China
3. Department of Urology, Dongguan People’s Hospital, Dongguan 523000, China
4. Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, Guangzhou 510000, China
5. Department of Urology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510000, China
6. Wake Forest Institute for Regenerative Medicine, Wake Forest University, Winston-Salem, NC 27101, USA