1. National, state, and urban area vaccination coverage levels among children aged 19–35 months—United States, 2000;Centers for Disease Control and Prevention;MMWR Morb Mortal Wkly Rep,2001
2. Recommendations regarding interventions to improve vaccination coverage in children, adolescents, and adults;Task Force on Community Preventive Services;Am J Prev Med,2000
3. An analysis of the immunization status of preschool children enrolled in a statewide Medicaid managed care program;Vivier;J Pediatr,2001
4. Immunization recall: effectiveness and barriers to success in an urban teaching clinic;Kempe;J Pediatr,2001
5. US children living in and near poverty: risk of vaccine-preventable diseases;Klevens;Am J Prev Med,2001