PT - JOURNAL ARTICLE AU - Kim Krisberg TI - Colorado’s vaccine tracking system aims to increase immunization rates DP - 2011 Oct 01 TA - The Nation's Health PG - 8--8 VI - 41 IP - 8 4099 - http://www.thenationshealth.org/content/41/8/8.2.short 4100 - http://www.thenationshealth.org/content/41/8/8.2.full SO - Nations Health2011 Oct 01; 41