Funding for this research was provided by:
Ministry of Education (NRF-2015S1A5B5A01016088)
Received: 29 May 2019
Accepted: 29 October 2019
First Online: 27 November 2019
: This study was conducted in accordance with the ethical guidelines of the Konkuk University Institutional Animal Care and Use Committee, which incorporate the guidelines put forth in the Declaration of Helsinki (1964).
: All authors have read and approved the submission of the manuscript. The manuscript has not been published and is not being considered for publication elsewhere, in whole or in part, in any language.
: The authors declare that they have no competing interests.