Amoebiasis and giardiasis in New York City: a response.
D000562:Amebiasis / Q000453:epidemiology* / Q000635:transmission; D004196:Disease Outbreaks / Q000453:epidemiology; D005873:Giardiasis / Q000453:epidemiology* / Q000635:transmission; D006716:Homosexuality; D006801:Humans; D008297:Male; D009519:New York City