. 2015 Oct 8;19(6):1237–1250. doi: 10.1111/hex.12418
© 2015 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 review flow.