Kim, Hye Ri
Kim, Sun Mi https://orcid.org/0000-0003-4131-0542
Hong, Ji Sun
Han, Doug Hyun
Yoo, Seo-Koo
Min, Kyung Joon
Lee, Young Sik
Article History
Received: 11 March 2018
Accepted: 27 August 2018
First Online: 31 August 2018
Ethics approval and consent to participate
: This survey study was approved by the Chung-Ang University Institutional Review Board. Written informed consent was obtained from all individual participants included in the study.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.