Text and Data Mining valid from 2019-08-01
Received: 23 April 2019
Revised: 26 May 2019
Accepted: 26 June 2019
First Online: 1 August 2019
Compliance with ethical standards
: The scientific guarantor of this publication is Chengru Song.
: 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.
: • prospective• diagnostic study• performed at one institution