Funding for this research was provided by:
National Research Foundation of Korea (NRF-2016M3C7A1905074)
Ministry of Science, ICT and Future Planning (2016R1A2B4009409, 2013R1A1A1057928, 2017R1D1A1B03028839)
Received: 23 August 2017
Accepted: 19 February 2018
First Online: 27 February 2018
Ethics approval and consent to participate
: All the animal-related procedures were conducted in accordance with the guidelines of the Institutional Animal Care and Use Committee of Chungnam National University (CNU-00781) and were consistent with the ethical guidelines of the National Institutes of Health and the International Association for the Study of Pain. All efforts were made to minimize animal suffering and to reduce the number of animals used.
: Not applicable.
: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
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