Funding for this research was provided by:
Ministry of Health and Welfare (HN14C0086)
Dongguk University Research Fund (2018)
Article History
Received: 25 June 2019
Revised: 12 August 2019
Accepted: 2 September 2019
First Online: 11 October 2019
Compliance with ethical standards
:
: The authors have no financial conflicts of interest.
: This study was approved by the Institutional Research Board of the Dongguk University (DUIRB Approval No. 20151127-011).