Wang, Lichun
Qing, Junpu
Zhang, Xiaofei
Chen, Lei
Li, Zheqing
Xu, Wen http://orcid.org/0000-0002-8258-2707
Yao, Lin http://orcid.org/0000-0002-3422-8922
Article History
Received: 21 May 2020
Accepted: 15 July 2020
First Online: 31 July 2020
Compliance with ethical standards
:
: The authors have declared no conflicts of interest for this article.
: The protocol was approved by the Institutional Ethics Committee of the Six Affiliated Hospital of Sun Yat-sen University.
: A waiver for informed consents was allowed by the ethic committee in view of the fact that data in this study were analyzed retrospectively and anonymously.