Wang, Xuan
Han, Jiuhui
Li, Yazhou
Liu, Yuchang
Luo, Junzhong
Article History
Received: 11 September 2020
Accepted: 29 November 2020
First Online: 6 April 2021
Ethics approval and consent to participate
: The study protocol was approved by the Ethics Committee of The Third Hospital of Hebei Medical University. Written informed consent was obtained from all the study subjects before enrollment.
: Not applicable.
: The authors declare that they have no competing interests.