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Article History

Received: 27 February 2020

Revised: 27 April 2020

Accepted: 2 July 2020

First Online: 16 July 2020

Compliance with ethical standards

:

: The scientific guarantor of this publication is Prof. Gyeong-Moon Kim.

: 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.

: We thank Heejin Yoo, MS, Statistics and Data Center, Samsung Medical Center, and Seonwoo Kim, PhD, Division of Biostatistics, Samsung Biomedical Research Institute, for their assistance in the data analysis.

: Written informed consent was obtained from all patients in this study.

: Institutional Review Board approval was obtained.

: • prospective• prognostic study• performed at one institution