Funding for this research was provided by:
Jeju National University Hospital (2016)
Article History
Received: 6 November 2019
Accepted: 8 February 2020
First Online: 7 March 2020
Compliance with ethical standards
:
: Young Ree Kim, Sung Ha Kang and Seung-Ho Hong declare that there is no conflict of interests or financial interests on this article contents.
: Written informed consent was approved by the Institutional Review Board of Jeju National University Hospital. The experimental procedures followed the standard regulation of the Review Board.