Su, Yuhua
Liu, Yajing
Ma, Chao
Guan, Chunxiao
Ma, Xiufen
Meng, Shan
Article History
Received: 23 November 2020
Accepted: 18 January 2021
First Online: 6 February 2021
Ethics approval and consent to participate
: The protocol of this study was permitted by the Ethics Committee of Affiliated Hospital of Weifang Medical University. Written informed consent was obtained from each patient.
: Informed consent was obtained from all patients.
: The authors declare that they have no competing interests.