. 2019 Feb 12;3(2):146–152. doi: 10.1002/bjs5.50120
© 2019 The Authors. BJS Open published by John Wiley & Sons Ltd on behalf of BJS Society Ltd
This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.
Figure 1.
PRISMA diagram showing the selection of articles for review