Funding for this research was provided by:
Ministry of Science, ICT, and Future Planning, Republic of Korea (NRF-2014M3C7A1046042)
Korea Health Technology R&D Project through the Korea Health Industry Development Institute (KHIDI), funded by the Ministry of Health & Welfare, Republic of Korea (HI18C0630)
Received: 16 May 2019
Accepted: 27 August 2019
First Online: 12 September 2019
Ethics approval and consent to participate
: The study protocol was approved by the Institutional Review Board of Seoul National University Hospital, and written informed consent was obtained from all participants.
: Not applicable
: The authors declare that they have no competing interests.