Funding for this research was provided by:
National Research Foundation of Korea (2017R1A5A2015369, 2016H1A2A1907107)
Ministry of the Environment (2012001350013)
Korea Health Industry Development Institute (HI17C0039)
Yonsei University (2017-52-0081)
Received: 19 September 2019
Accepted: 30 December 2019
First Online: 8 January 2020
Ethics approval and consent to participate
: Human tissue experiments were reviewed and approved by the Institutional Review Board (IRB) of Yonsei University Wonju College of Medicine with the <i>IRB number YWMR-12-6-026</i>.
: The authors have no conflict of interest.
: Not applicable.