Liu, Hui
Xie, Sheng
Liang, Tian
Ma, Li
Sun, Hongliang
Dai, Huaping
Wang, Chen
Article History
Received: 13 December 2018
Revised: 28 January 2019
Accepted: 11 March 2019
First Online: 27 March 2019
Compliance with ethical standards
:
: The scientific guarantor of this publication is Sheng Xie.
: The authors declare that they have no conflict of interests.
: No complex statistical methods were necessary for this paper.
: Informed consent was waived because this was a retrospective study.
: The study was approved by the ethical committee in our institution.
: This study subjects or cohorts was original research that has not been published previously, and not under consideration for publication elsewhere.
: • Retrospective• Diagnostic or prognostic study• Performed at one institution