Funding for this research was provided by:
National Natural Science Foundation of China (81471713)
Text and Data Mining valid from 2018-11-28
Received: 8 June 2018
Revised: 6 October 2018
Accepted: 24 October 2018
First Online: 28 November 2018
Compliance with ethical standards
: The scientific guarantor of this publication is Ran Haitao.
: The authors declare that they have no conflict of interest.
: 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.
: • Prospective• Diagnostic or prognostic study• Performed at one institution