1. Achievements in public health, 1900–1999: impact of vaccines universally recommended for children – United States, 1900–1998;National Immunization Program CDC;MMWR Morbidity and Mortality Weekly Report,1999
2. Iannelli V. Understanding vaccine safety. Updated December 3, 2003. Available at: www.pediatrics.about.com/cs/immunizations/a/vaccine_safety.htm (accessed July 20, 2012).
3. Monitoring the safety of vaccines: assessing the risks;Ellenberg;Drug Safety,2002
4. The science of evaluation of AEs associated with vaccination;Halsey;Seminars in Pediatric Infectious Diseases,2002
5. Hair loss after routine immunizations;Wise;JAMA,1997