Funding for this research was provided by:
National Research Foundation of Korea (NRF- 2016R1D1A1B03930458)
Received: 20 August 2019
Accepted: 19 December 2019
First Online: 6 January 2020
Ethics approval and consent to participate
: All animal procedures were performed following the National Institutes of Health Guidelines for the Humane Treatment of Animals, with approval from the Institutional Animal Care and Use Committee of Seoul National University (SNU-140108-4).
: Not applicable.
: The authors declare that they have no competing interests.