Kim, Seok-Hyun
Go, Se-Il
Song, Dae Hyun
Park, Sung Woo
Kim, Hye Ree
Jang, Inseok
Kim, Jong Duk
Lee, Jong Sil
Lee, Gyeong-Won
Article History
Received: 11 October 2018
Revised: 16 January 2019
Accepted: 21 January 2019
First Online: 12 February 2019
<!--Emphasis Type='Bold' removed-->Data availability:
: All data are available via the corresponding author.
: The authors declare no competing interests.
: The study was conducted in accordance with the Good Clinical Practice guidelines and the Declaration of Helsinki. This retrospective study was approved by the Institutional Review Board, which waived the requirement for informed consent.
: This work is published under the standard license to publish agreement. After 12 months the work will become freely available and the license terms will switch to a Creative Commons Attribution 4.0 International (CC BY 4.0).