1. Healthy People 2010,2000
2. National, state, and urban area vaccination levels among children aged 19–35 months—United States, 2002;MMWR,2003
3. Vaccination coverage by race/ethnicity and poverty level among children aged 19–35 months—United States, 1997;MMWR,1998
4. CDC's National Immunization Program: Methods Used to Identify Pockets of Underimmunized Children Not Evaluated,1997
5. Immunization pockets of need: science and practice;Santoli;Am J Prev Med,2000