From the Centers for Disease Control and Prevention. Primary and secondary syphilis among men who have sex with men--New York City, 2001.
D000293:Adolescent; D000328:Adult; D018451:Homosexuality, Male / Q000706:statistics & numerical data*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009519:New York City / Q000453:epidemiology; D013587:Syphilis / Q000453:epidemiology*