1. WHO. Ten threats to global health in 2019, https://www.who.int/news-room/spotlight/ten-threats-to-global-health-in-2019 (2019, accessed 19 November 2020).
2. Recent Vaccine Mandates in the United States, Europe and Australia: a Comparative Study;Attwell;Vaccine,2018
3. Childhood Vaccination Mandates: scope, Sanctions, Severity, Selectivity, and Salience;Attwell;Milbank Q,2019
4. Parental attitudes towards mandatory vaccination; a systematic review;Smith;Vaccine,2021
5. Sabin Vaccine Institute. Legislative Approaches to Immunization Across the European Region, https://www.sabin.org/updates/resources/legislative-approaches-immunization-across-european-region (2018, accessed 9 February 2021).