Park, Sinyoung
Nam, Chung Mo
Park, Sejung
Noh, Yang Hee
Ahn, Cho Rong
Yu, Wan Sun
Kim, Bo Kyung
Kim, Seung Min
Kim, Jin Seok
Rha, Sun Young
Funding for this research was provided by:
Ministry of Health and Welfare, Republic of Korea (1520190)
Article History
Received: 2 January 2018
Accepted: 10 April 2018
First Online: 25 April 2018
Ethics approval and consent to participate
: Ethics approval and participant consent was not necessary as this study involved the use of an encrypted database and does not contain personal information or identifiers according to the Bioethics and Safety Act, Korea.
: The authors declare that they have no competing interests.
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