Funding for this research was provided by:
Ministry of Education (2016R1D1A1B04932171)
Received: 11 March 2020
Accepted: 13 April 2020
First Online: 1 May 2020
Ethics approval and consent to participate
: This study received ethical approval from the IRB of Severance Hospital, Yonsei University Health System, Seoul, South Korea (ref no: 4–2018-0882) and Inha University Hospital, Incheon, South Korea (ref no: 2019–11-040). Informed consent will be obtained from the participants.
: Not applicable.
: The authors declare that they have no competing interests.