PT - JOURNAL ARTICLE ED - American Public Health Association TI - Correction DP - 2011 Aug 01 TA - The Nation's Health PG - 2--2 VI - 41 IP - 6 4099 - http://www.thenationshealth.org/content/41/6/2.2.short 4100 - http://www.thenationshealth.org/content/41/6/2.2.full SO - Nations Health2011 Aug 01; 41