Funding for this research was provided by:
Health and Family Planning Industry Research Project of Hainan Province (No.1605320274A2001)
Youth Science Fund Project of National Natural Science Foundation of China (81902860)
Received: 5 January 2020
Accepted: 29 September 2020
First Online: 15 October 2020
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of Haikou Municipal Hospital and Hubei Polytechnic University. Written informed consent was obtained from all patients.
: Written informed consent for publication was obtained from all participants.
: The authors declare no competing interests.