Zheng, Zhong
Li, Jun
An, Junyan
Feng, Yikuan
Wang, Lirong
Article History
Received: 24 June 2020
Accepted: 27 December 2020
First Online: 11 January 2021
Ethics approval and consent to participate
: A signed written informed consent was obtained from each patient and the study has been approved by the Ethics Committee of Weifang People’s Hospital.
: Written informed consent for publication was obtained from each participant.
: The authors declare that they have no competing interests.