Funding for this research was provided by:
Ministry of Education (NRF-2015R1D1A1A01056650)
Article History
Received: 12 October 2018
Accepted: 17 December 2018
First Online: 2 January 2019
Compliance with ethical standards
:
: All authors declare that they have no conflicts of interest.
: The animal protocol and sample extraction method in this study were reviewed by the Pusan National University-Institutional Animal Care and Use Committee (PNU-IACUC) for the ethical procedures and scientific care (approval number PNU-2013-0411).
: This article does not contain any studies with human participants performed by any of the authors.