GP staff receive abuse every day over Covid vaccine reminders | GPs | The Guardian. (n.d.). Retrieved August 1, 2021, from https://www.theguardian.com/society/2021/jul/14/gp-staff-receive-abuse-every-day-over-covid-vaccine-reminders?CMP=Share_iOSApp_Other

Schmitt, H.-J., Booy, R., Aston, R., Van Damme, P., Schumacher, R. F., Campins, M., Rodrigo, C., Heikkinen, T., Weil-Olivier, C., Finn, A., Olcén, P., Fedson, D., & Peltola, H. (2007). How to optimise the coverage rate of infant and adult immunisations in Europe. BMC Medicine, 5, 11. https://doi.org/10.1186/1741-7015-5-11