Funding for this research was provided by:
the Scientific and Technological Innovation leaders in Central Plains (194200510017)
Provincial Ministry Co-construction Project from Medical Scientific and Technological Research Program of Henan Province (SBGJ2018020)
Science and Technology people-benefit project of Zhengzhou (2019KJHM0001)
Article History
Received: 9 April 2020
Accepted: 24 April 2020
First Online: 6 May 2020
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interests.