letter . 2021 Apr 16;8(3):66–77. doi: 10.1049/htl2.12008
© 2021 The Authors. Healthcare Technology Letters published by John Wiley & Sons Ltd on behalf of The Institution of Engineering and Technology
This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
FIGURE 4.
PRISMA flow diagram for paper selection