Funding for this research was provided by:
Hubei Provincial Population and Family Planning Commission (WJ2017M155)
Received: 12 September 2019
Accepted: 27 April 2020
First Online: 13 May 2020
Ethics approval and consent to participate
: Ethical approval was obtained from the Ethics Committee of Wuhan General Hospital of People’s Liberation Army. Written informed consent was obtained from all individual participants included in this study.
: Not applicable.
: The authors declare that they have no competing interests.