Article History
Received: 5 January 2018
Accepted: 6 June 2018
First Online: 22 June 2018
Ethics approval and consent to participate
: After explaining the study’s purpose, confidentiality, and the fact that the data would be used only for the stated purposes, trained staff members obtained written informed consent from individuals who understood the study’s purpose and volunteered to participate therein. This study was also approved by the Institutional Review Board of Ajou University of Korea, (Approval No. AJIRB-MED-EXP-16-279).
: The authors declare that they have no competing interests.
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