Zhao, Jinzhu
Qu, Liang
Li, Peng
Tan, Changlong
Tao, Chunsheng
Article History
Received: 3 September 2020
Accepted: 14 December 2020
First Online: 6 January 2021
Ethics approval and consent to participate
: The Ethics Committee of our hospital concluded that no approval of the committee was necessary because of the retrospective design of the study and the use of anonymized patient data.
: Not applicable.
: The authors declare that they have no competing interests.