From the Centers for Disease Control and Prevention. Increases in unsafe sex and rectal gonorrhea among men who have sex with men--San Francisco, California, 1994-1997.
D000328:Adult; D006069:Gonorrhea / Q000453:epidemiology*; D018451:Homosexuality, Male / Q000706:statistics & numerical data*; D006801:Humans; D008297:Male; D012002:Rectal Diseases / Q000453:epidemiology*; D012309:Risk-Taking; D012495:San Francisco / Q000453:epidemiology; D012725:Sexual Behavior / Q000706:statistics & numerical data*