Funding for this research was provided by:
National Research Foundation of Korea (2017R1A2A1A05001330, 2018R1D1A1B07046619, 2019R1A2C2088573)
Ministry of Health and Welfare (HI18C2435)
Korea Institute of Radiological and Medical Sciences (50461-2019)
Received: 11 November 2019
Accepted: 14 May 2020
First Online: 24 May 2020
Ethics approval and consent to participate
: Not applicable.
: All authors gave consent for the scientific publication of this manuscript.
: The authors confirm that there are no known conflicts of interest associated with this publication and there has been no financial and non-financial support for this work that could have influenced its outcome.