Jang, Ji Young
Shim, Hongjin
Kwon, Hye Youn
Chung, Hoejeong
Jung, Pil Young
Kim, Seongyup
Ryu, Hoon
Bae, Keum Seok
Article History
Received: 2 July 2017
Accepted: 1 December 2017
First Online: 27 December 2017
Compliance with ethical standards
:
: There are no potential conflicts of interest for each of the authors.
: The present study protocol was reviewed and approved by the institutional review board of Wonju Severance Christian Hospital (Reg. No. CR316111). Informed consent was exempted, because it was a retrospective study.