Chang, Youngs http://orcid.org/0000-0003-4722-6894
Kang, Hee-Yeon http://orcid.org/0000-0001-8530-8087
Lim, Dohee http://orcid.org/0000-0002-0549-8704
Cho, Hong-Jun http://orcid.org/0000-0002-5358-6549
Khang, Young-Ho http://orcid.org/0000-0002-9585-8266
Funding for this research was provided by:
a grant of the Korea Health Technology R&D Project through the Korea Health Industry Development Institute (KHIDI), both funded by the Ministry of Health & Welfare, Republic of Korea (HI18C0446)
the Mid-career Researcher Program of the National Research Foundation (NRF) funded by the Ministry of Science & ICT (2017R1A2A2A05069746)
Article History
Received: 13 May 2019
Accepted: 11 September 2019
First Online: 18 September 2019
Ethics approval and consent to participate
: This study was reviewed and approved by the Institutional Review Board (IRB) of Seoul National University College of Medicine (IRB No. E-1806-144-953).
: Informed consent for participation in the Social Survey of Statistics Korea was granted by all subjects.
: The authors have no conflicts of interest associated with the material presented in this paper.