Ma, Ying
Qu, Shujuan
Xu, Liangpeng
Lu, Hongbo
Li, Baoguo
Article History
Received: 20 February 2020
Accepted: 30 August 2020
First Online: 16 September 2020
Ethics approval and consent to participate
: This research was approved by the Ethics Committee of Linyi Central Hospital. All methods were carried out in accordance with relevant guidelines and regulations.
: Not applicable.
: The authors declare that they have no competing interests.