. 2018 Oct 30;22(1):3–20. doi: 10.1111/hex.12841
© 2018 The Authors Health Expectations published by John Wiley & Sons Ltd
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 1.
PRISMA flow chart