. 2018 Feb 13;20(2):e56. doi: 10.2196/jmir.8987
©Li-Ang Lee, Yi-Ping Chao, Chung-Guei Huang, Ji-Tseng Fang, Shu-Ling Wang, Cheng-Keng Chuang, Chung-Jan Kang, Li-Jen Hsin, Wan-Ni Lin, Tuan-Jen Fang, Hsueh-Yu Li. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 13.02.2018.
This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in the Journal of Medical Internet Research, is properly cited. The complete bibliographic information, a link to the original publication on http://www.jmir.org/, as well as this copyright and license information must be included.