https://www.voxespana.es/biblioteca/espana/2018m/gal_c2d72e181103013447.pdf
https://publiclawforeveryone.com/2017/06/10/does-the-salisbury-convention-apply-during-a-hung-parliament/
https://www.fawcettsociety.org.uk/Handlers/Download.ashx?IDMF=bb90467f-174b-4f68-801a-4ae04e4fd33c
https://www.socialeurope.eu/health-policy-after-the-crisis-more-of-the-same-or-a-new-path