PT - JOURNAL ARTICLE AU - Johnson, Teddi Dineley TI - New APHA book explores many health challenges of megacities DP - 2011 Jul 01 TA - The Nation's Health PG - 5--5 VI - 41 IP - 5 4099 - http://www.thenationshealth.org/content/41/5/5.1.short 4100 - http://www.thenationshealth.org/content/41/5/5.1.full SO - Nations Health2011 Jul 01; 41