
https://www.ifs.org.uk/inequality/wp-content/uploads/2019/05/The-IFS-Deaton-Review-launch_final.pdf

https://researchbriefings.files.parliament.uk/documents/CBP-9255/CBP-9255.pdf

https://foreignpolicy.com/2021/08/15/belgium-covid-19-pandemic-vaccination-campaign-model-europe-eu/