Funding for this research was provided by:
Hanyang University (HY-2014)
Article History
Received: 26 June 2018
Accepted: 12 June 2019
First Online: 25 June 2019
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board on Human Subjects Research and the Ethics Committee of Hanyang University Hospital. Written informed consent was obtained from all subjects.
: Not applicable.
: The authors declare that they have no competing interests.