. 2014 Jul 11;5(4):193–198. doi: 10.1016/j.phrp.2014.06.003
© 2014 Published by Elsevier B.V. on behalf of Korea Centers for Disease Control and Prevention.
This is an Open Access article distributed under the terms of the CC-BY-NC License (http://creativecommons.org/licenses/by-nc/3.0).