https://www.publications.parliament.uk/pa/ld201314/ldselect/ldeucom/164/164.pdf
https://www.esri.ie/system/files/publications/JR1.pdf
https://www.nuffieldtrust.org.uk/files/2017-07/learning-from-scotland-s-nhs-final.pdf
https://www.socialeurope.eu/the-ranks-of-the-working-poor