. 2020 Jan 7;4(2):171–181. doi: 10.1002/bjs5.50240
© 2020 Amsterdam University Medical Centers. 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 3.
Overview of the subspecialties of included studies