1. American Academy of Pediatrics. Documenting Parental Refusal to Have Their Children Vaccinated. www.aap.org/en-us/Documents/immunization_refusaltovaccinate.pdf. Accessed March 22, 2019
2. American Academy of Pediatrics. Immunizations: vaccine hesitant parents. www.aap.org/en-us/advocacy-and-policy/aap-health-initiatives/immunizations/Pages/vaccine-hesitant-parents.aspx. Accessed March 22, 2019
3. Meningococcal conjugate vaccines policy update: booster dose recommendations;American Academy of Pediatrics Committee on Infectious Diseases;Pediatrics,2011
4. Centers for Disease Control and Prevention. Immunization Information Systems Annual Report (IISAR). www.cdc.gov/vaccines/programs/iis/annual-report-iisar/index.html. Updated October 9, 2018. Accessed March 22, 2019