Sun, Xuedong
Zhao, Xueli
Zhou, Licheng
Su, Zheng
Funding for this research was provided by:
Health Commission of Weifang City (wfwsjk-2019-159)
Article History
Received: 14 November 2020
Accepted: 7 January 2021
First Online: 19 January 2021
Ethics approval and consent to participate
: This study was approved by Weifang People’s Hospital Institutional Review Board.
: Not applicable.
: The authors declare that they have no competing interests.