Choi, Young Kwon
Ahn, Ji Yong
Na, Hee Kyong
Jung, Kee Wook
Kim, Do Hoon
Lee, Jeong Hoon
Choi, Kee Don
Song, Ho June
Lee, Gin Hyug
Jung, Hwoon-Yong
Article History
Received: 17 May 2018
Accepted: 6 June 2018
First Online: 12 June 2018
Compliance with ethical standards
:
: The authors have no potential conflict of interest relevant to the present study.
: All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1964 and later versions. The exemption from the informed consent requirement permitted by the Asan Medical Center Institutional Review Board.