Funding for this research was provided by:
National Natural Science Foundation of China (81471673 and 81671699)
the Shanghai Hospital Development Center (SHDC12016233)
the Science and Technology Commission of Shanghai Municipality (17411967400)
Text and Data Mining valid from 2019-05-29
Received: 1 February 2019
Revised: 15 April 2019
Accepted: 13 May 2019
First Online: 29 May 2019
Compliance with ethical standards
: The scientific guarantor of this publication is Rong Wu.
: 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