. 2019 Nov 19;20(1):1103–1117. doi: 10.1080/14686996.2019.1693880
© 2019 The Author(s). Published by National Institute for Materials Science in partnership with Taylor & Francis Group.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Figure 6.
The system is composed of both implanted and external devices [36].