Received: 4 September 2019
Accepted: 30 July 2020
First Online: 14 August 2020
Ethics approval and consent to participate
: The study was in accordance with the ethical standards of Xinxiang Medical University, Henan, China. Informed consent was obtained from all individual participants included in the study. The study was approved by the ethics committee at Xinxiang Medical University.
: Not applicable.
: The authors declare no competing non-financial/financial interests.