1. National, state, and local area vaccination coverage among adolescents aged 13-17 years—United States, 2008;Centers for Disease Control and Prevention;MMWR Morb Mortal Wkly Rep,2009
2. National, state, and local area vaccination coverage among adolescents aged 13-17 years—United States, 2009;Centers for Disease Control and Prevention;MMWR Morb Mortal Wkly Rep,2010
3. National and state vaccination coverage among adolescents aged 13 through 17 years—United States, 2010;Centers for Disease Control and Prevention;MMWR Morb Mortal Wkly Rep,2011
4. National and state vaccination coverage among adolescents aged 13-17 years—United States, 2011;Centers for Disease Control and Prevention;MMWR Morb Mortal Wkly Rep,2012
5. Health disparities by race and class: why both matter;Kawachi;Health Affairs,2005