Funding for this research was provided by:
Natural Science Foundation of Henan Province (162300410215)
Received: 19 December 2019
Accepted: 12 May 2020
First Online: 24 May 2020
Ethics approval and consent to participate
: The study was approved by the ethic committee of Xinxiang Medical University. Written informed consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.