Wang, Yu http://orcid.org/0000-0002-3294-5549
Article History
Received: 16 July 2020
Revised: 10 January 2021
Accepted: 27 January 2021
First Online: 3 February 2021
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of Zhumadian Central Hospital (2012019).
: All participants provided written informed consent.
: The authors declare no conflicts of interest.