Li, Cui
Zhao, Hong-Lian
Li, Yu-Juan
Zhang, Yu-Ying
Liu, Hong-Yun
Feng, Fu-Zhong
Yan, Hua http://orcid.org/0000-0002-4901-5153
Article History
Received: 29 September 2020
Accepted: 19 January 2021
First Online: 8 February 2021
Compliance with ethical standards
:
: The authors declare that they have no competing interests.
: The study protocol was approved by the Ethics Committee of Linyi Central Hospital (No.LY19-208). Written informed consent was obtained from all the study subjects before enrollment.