. 2019 Nov 20;14(2):176–180. doi: 10.2185/jrm.3008
©2019 The Japanese Association of Rural Medicine
This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives (by-nc-nd) License. (CC-BY-NC-ND 4.0: http://creativecommons.org/licenses/by-nc-nd/4.0/).