Li, Xiaoyu
Zhou, Wei
Zhan, Weiwei
Article History
Received: 27 October 2019
Accepted: 21 April 2020
First Online: 14 May 2020
Ethics approval and consent to participate
: This retrospective study was approved by the Ethics Committee of the Ruijin Hospital, Shanghai Jiao Tong University School of Medicine. The procedures of reviewing the research were in line with the ethical standards of the institutional and national research committees.
: Not applicable.
: The authors declare that they have no competing interests.