Text and Data Mining valid from 2019-11-27
Received: 2 June 2019
Accepted: 15 November 2019
First Online: 27 November 2019
Ethics approval and consent to participate
: The use of semen for research had been reviewed and approved by the hospital’s institutional review board with the approval number 14MMHIS280.
: Not applicable.
: The authors declare that they have no competing interests.