Ye, Wenjing
Li, Xiaoming
Gu, Wen http://orcid.org/0000-0003-1414-0605
Guo, Xuejun
Han, Fengfeng
Liu, Song
Article History
Received: 23 January 2019
Accepted: 10 December 2019
First Online: 18 December 2019
Ethics approval and consent to participate
: The study was approved by the ethics committee of Xinhua Hospital. It was a retrospective study, and verbal informed consent was obtained from all of the participants, the method of which was approved by the ethics committee.
: Not applicable.
: The authors declared no competing interests.