Lee, J. S.
Kim, J. M.
Kim, K. S.
Choi, G.-S.
Joh, J.-W.
Lee, S.-K.
Article History
Received: 16 July 2018
Accepted: 29 October 2018
First Online: 8 November 2018
Compliance with ethical standards
:
: JSL, JMK, KSK, GSC, JWJ and SKL declare that they have no conflict of interest.
: This study protocol was reviewed and approved by the Institution’s Review Board of Samsung Medical Center, Sungkyunkwan University School of Medicine (IRB no. 2018-05-086).
: This article is a review of database already collected and does not include research directly related to human or animal participation.
: For this study, formal consent was not necessary.