Kim, Suhyun
Hwang, Subin
Jang, Hye Ryoun
Sohn, Insuk
Ahn, Hyeon Seon
Park, Hyung-Doo
Huh, Wooseong
Jin, Dong-Chan
Kim, Yoon-Goo
Kim, Dae Joong
Oh, Ha Young
Lee, Jung Eun http://orcid.org/0000-0002-4387-5291
Article History
Received: 1 May 2018
Accepted: 30 May 2019
First Online: 11 June 2019
Ethics approval and consent to participate
: The study protocol was approved by the institutional review board (IRB) of Samsung Medical Center. We did not obtain written informed consent from the participants for this retrospective study because patient information was anonymized and deidentified prior to analysis. The IRB ensured the anonymity of the data and approved this consent procedure.
: Not applicable.
: The authors declare that they have no competing interests.