Xu, Limei
Wang, Xiuju
Pan, Xueyi
Wang, Xiaotao
Wang, Qing
Wu, Bingyi
Cai, Jiahui
Zhao, Ying
Chen, Lijuan
Li, Wuping
Li, Juan
Article History
Received: 14 March 2020
Accepted: 13 July 2020
First Online: 8 August 2020
Ethics approval and consent to participate
: This study was reviewed and approved by the first affiliated hospital of Sun Yat-sen university (IRB:[2019]341). Due to retrospective design of the study, the requirement for informed consent was waived.
: Not applicable.
: The authors declare that they have no competing interests.