Funding for this research was provided by:
Yeungnam University (2017)
Article History
Received: 23 March 2020
Revised: 14 May 2020
Accepted: 1 June 2020
First Online: 10 July 2020
Compliance with ethical standards
:
: The authors declare that they have no competing interests.
: The study adhered to the Declaration of Helsinki and was approved by the institutional review board.
: Written informed consent for publication was obtained from all participants.