Funding for this research was provided by:
national research foundation of Korea (NRF-2018-R1D1A1A02085328, NRF-2017R1C1B1007696)
Article History
Received: 16 August 2019
Accepted: 15 June 2020
First Online: 23 June 2020
Ethics approval and consent to participate
: The Ethics Committee of Hallym University (2017-I102) approved the use of these data. Written informed consent was waived by the institutional review board.
: All authors took part in the study and agree with the contents of the manuscripts.
: The authors do not have any financial or personal relationships with people or organizations that could inappropriately influence their work in the present article.