Control of schistosomiasis: the Puerto Rican experience.
D000818:Animals; D001700:Biomphalaria / Q000469:parasitology; D006801:Humans; D011647:Puerto Rico; D012550:Schistosoma mansoni / Q000502:physiology; D012552:Schistosomiasis / Q000188:drug therapy / Q000517:prevention & control* / Q000635:transmission; D012882:Skin Tests; D012959:Socioeconomic Factors