1. Historical comparisons of morbidity and mortality for vaccine-preventable diseases in the United States;Roush;JAMA,2007
2. Centers for Disease Control and Prevention vaccines for your children. 2018. Available at: https://www.cdc.gov/vaccines/parents/index.html. Accessed September 20, 2019.
3. Principles and considerations for adding a vaccine to a national immunization programme;World Health Organization,2014
4. Advisory committee on immunization practices policies and procedures,2018
5. Licensure, approval, and uptake of vaccines in the United States;Pickering;J Pediatr Infect Dis Soc,2018