TI - PRevalence and awareness of hiv infection among men who have sex with men—21 cities, united states, 2008 PT - JOUR DP - 2010 TA - JAMA pages = {2235-2237}, VI - 304 IP - 20 AID - [doi] 4100 - http://dx.doi.org/ SO - JAMA November 24, 2010 304(20):2235