Funding for this research was provided by:
National Research Foundation of Korea (2011-0016548, 2017R1A2B1006203)
Article History
Received: 21 October 2017
Accepted: 14 February 2018
First Online: 19 February 2018
Compliance with Ethical Standards
:
: Kyunghwa Baek, Jiho Kang, Jinu Lee, Min Kim and Jeong‑Hwa Baek declare that they have no conflict of interest.
: All applicable international, national, and/or institutional guidelines for the care and use of animals were followed.
: All procedures performed in studies involving animals were in accordance with the ethical standards of Seoul National University Institutional Animal Care and Use Committee (SNU-110531-2).
: Informed consent was obtained from all the authors of this manuscript.