Funding for this research was provided by:
The Ministry of Health & Welfare, Republic of Korea (HI15C3227)
Text and Data Mining valid from 2020-04-15
Received: 13 October 2019
Accepted: 23 March 2020
First Online: 15 April 2020
Ethics approval and consent to participate
: This study was approved by the Institutional Review Boards of Kangnam Sacred Heart Hospital (IRB No. 2015-11-134). Written informed consent was obtained from all patients before enrollment.
: Not applicable.
: The authors declare that they have no competing interests.