Referanslar

1. PlotkinS, et al. Vaccine 3rd Edition, Philadelphia, W. B. Saunders Company, 1999
2. American Academy of Pediatrics. In Pickering LK, Baker CJ, Kimberlin DW, Long SS, eds. Red Book: 2009 Report of the Committee on Infectious Diseases. 28th ed. Elk Grove Village, IL: American Academy of Pediatrics; 2009