©Fei Li, Weisong Liu, Hong Yu. Originally published in JMIR Medical Informatics (http://medinform.jmir.org), 26.11.2018. 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 JMIR Medical Informatics, is properly cited. The complete bibliographic information, a link to the original publication on http://medinform.jmir.org/, as well as this copyright and license information must be included.
Except where otherwise noted, this item's license is described as ©Fei Li, Weisong Liu, Hong Yu. Originally published in JMIR Medical Informatics (http://medinform.jmir.org), 26.11.2018. 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 JMIR Medical Informatics, is properly cited. The complete bibliographic information, a link to the original publication on http://medinform.jmir.org/, as well as this copyright and license information must be included.