1. The Red Book through the ages;Pickering;Pediatrics,2013
2. Report of the committee on immunization procedures of the American Academy of Pediatrics,1938
3. Historical perspective: history of CDC;Centers for Disease Control and Prevention;MMWR,1996
4. The Polio Vaccine Assistance Act of 1955;Andersen;Am J Public Health,1955
5. The History of Vaccines (a project of the College of Physicians of Philadelphia.) Vaccine Development and Licensing Events. Accessible at: http://www.historyofvaccines.org/content/articles/vaccine-development-licensing-events.