. 2019 Feb 27;3(3):260–273. doi: 10.1002/bjs5.50139
© 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/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Figure 3.
Funnel plot for primary outcome