Choi, Eun Young
Han, Jae Yong
Lee, Hyukmin
Lee, Sung Chul
Koh, Hyoung Jun
Kim, Sung Soo
Kim, Min http://orcid.org/0000-0003-1873-6959
Article History
Received: 23 August 2018
Revised: 15 January 2019
Accepted: 31 January 2019
First Online: 13 February 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures conducted in the study involving human participants were in accordance with the ethical standards of the Institutional Research Committee (Institutional Review Board at Gangnam Severance Hospital, Seoul, Republic of Korea), as well as with the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards. For this type of study, formal consent not was required.