. 2022 Feb 8;8(2):e43. doi: 10.1192/bjo.2022.14
© The Author(s) 2022
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Fig. 1.
Flow chart.