. 2021 Dec 6;21:1311. doi: 10.1186/s12913-021-06905-3
© The Author(s) 2021
Open AccessThe Article is licensed under the terms of the Creative Commons Attribution 3.0 IGO Licence (https://creativecommons.org/licenses/by/3.0/igo), which permits use, sharing, adaptation, distribution, and reproduction in any medium or format, as long as appropriate credit is given to the IGO, a link is provided to the Creative Commons licence, and any changes made are indicated.
Fig. 1.
Screening results