Funding for this research was provided by:
Korea Health Industry Development Institute (HI16C1559)
Ministry of Education (2017R1D1A1B03035627)
Text and Data Mining valid from 2020-02-11
Received: 26 June 2019
Accepted: 4 February 2020
First Online: 11 February 2020
Ethics approval and consent to participate
: The study was approved by the ethics committee of CHA Bundang Medical Center (CHAMC 2009–019) and informed consent was obtained from each participants.
: Not applicable.
: The authors declare that they have no competing interests.