Article History
Received: 8 February 2020
Revised: 10 June 2020
Accepted: 31 July 2020
First Online: 19 August 2020
Compliance with ethical standards
:
: The scientific guarantor of this publication is Yukun Luo.
: The authors of this manuscript declare no relationships with any companies whose products or services may be related to the subject matter of the article.
: No complex statistical methods were necessary for this paper.
: Written informed consent was obtained from all subjects (patients) in this study.
: Institutional review board approval was obtained.
: • retrospective• diagnostic or prognostic study• performed at one institution