Article History
Received: 5 March 2018
Revised: 6 December 2018
Accepted: 17 December 2018
First Online: 7 January 2019
Compliance with ethical standards
:
: The authors have no conflict of interest to declare.
: All procedures performed in studies involving animals were in accordance with the ethical standards of the Committee of Wonkwang University at which the studies were conducted. The university animal care committee for animal research of the Wonkwang University approved the study protocol (protocol number: WKU17-112).
: Informed consent was obtained from all individual participants included in the study.