Ho, I. G.
Ihn, K.
Koo, E.-J.
Oh, J.-T.
Article History
Received: 8 September 2018
Accepted: 17 January 2019
First Online: 24 January 2019
Compliance with ethical standards
:
: IGH, KI, EJK, and JTO declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: This article does not contain any studies with animals performed by any of the authors.
: Informed consent was obtained from each patient’s guardian.