Kim, Juyeong
Choi, Young
Park, Eun-Cheol
Article History
Received: 11 January 2018
Accepted: 17 May 2019
First Online: 28 May 2019
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board of Yonsei University School of Public Health, Seoul, Korea [IRB number 2–1040939-AB-N-01-2016-155]. The data used in this study are completely anonymous and does not include any personal information related to the participants, so this study did not require informed consent from the patients.
: The authors declare that they have no competing interests.
: The authors declare that they have no competing interests.