1. Loss, doubt, and betrayal: strands of vaccination skepticism on three Facebook pages involved in the controversy over human papillomavirus (HPV) vaccination;Agergaard;Front Commun,2020
2. Catholic medical association position paper on HPV immunization. January 2007. www.cathmed.org.
3. Center for Disease Control and Prevention. Hepatitis B vaccine and multiple sclerosis FAQs. https://www.cdc.gov/vaccinesafety/concerns/history/hepb-faqs.html.
4. Understanding non-completion of the human papillomavirus vaccine series: parent-reported reasons for why adolescents might not receive additional doses, United States, 2012;Clark;Publ Health Rep,2016
5. Hundreds of protesters gather against new flu vaccine mandate in Massachusetts;Deliso,2020