Kwon, Oh Chan http://orcid.org/0000-0001-7962-3697
Cho, Yong Mee http://orcid.org/0000-0001-8766-2602
Oh, Ji Seon http://orcid.org/0000-0002-0205-6492
Hong, Seokchan http://orcid.org/0000-0001-8722-3124
Lee, Chang-Keun http://orcid.org/0000-0003-3653-7515
Yoo, Bin http://orcid.org/0000-0002-1836-5273
Kim, Yong-Gil http://orcid.org/0000-0002-8029-7355
Article History
Received: 21 May 2019
Accepted: 3 July 2019
First Online: 6 July 2019
Compliance with ethical standards
:
: The authors declare that there is no conflict of interest.
: All procedures were performed in accordance with the ethical standards of the Institutional Review Board of Asan Medical Center (IRB No: 2018-0137) and with the 1964 Helsinki declaration.