Na, Kiyong
Lee, Jung-Yun
Sung, Ji-Youn
Kim, Gun Min
Koo, Ja Seung
Kim, Hyun-Soo http://orcid.org/0000-0002-2356-7822
Funding for this research was provided by:
Ministry of Education (2016R1D1A1B03935584)
Ministry of Science, ICT and Future Planning (2017R1A2B4007704)
Article History
Received: 25 April 2018
Revised: 27 May 2018
Accepted: 11 June 2018
First Online: 20 June 2018
Compliance with ethical standards
: This study was reviewed and approved by the Institutional Review Board at Severance Hospital, Yonsei University Health System, Seoul, Republic of Korea (4-2017-1247).
: The authors declare that they have no conflict of interest.