1. UNICEF. The State of the World's Children. vol. 1999 UNICEF; 1998.
2. Anonymous. Strategies to sustain success in childhood immunizations. The National Vaccine Advisory Committee. J Am Med Assoc 1999;282(4):363–70.
3. Immunisation coverage in Australian children: a systematic review;Lister;Communicable Dis Intell,1999
4. Peckham C, Bedford H, Senturia Y, Ades A. The Peckham Report: National Immunisation Study—factors influencing immunisation uptake in childhood. Institute of Child Health, London; 1989. p. 46.
5. The influence of provider behavior, parental characteristics, and a public policy initiative on the immunization status of children followed by private pediatricians: a study from Pediatric Research in Office Settings;Taylor;Pediatrics,1997