Shin, Jaeseung
Kim, Myung-Joon
Shin, Hyun Joo
Yoon, Haesung
Kim, Seung
Koh, Hong
Lee, Mi-Jung http://orcid.org/0000-0003-3244-9171
Article History
Received: 31 October 2018
Accepted: 3 April 2019
First Online: 15 April 2019
Ethics approval and consent to participate
: This retrospective study was approved by the Institutional Review Board of Severance Hospital (reference number of 1–2016-0060). The acquisition of informed consent was waived.
: Not applicable.
: The authors declare that they have no competing interests.
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