Streptococcal throat infection in urban school children.
D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D010612:Pharyngitis / Q000382:microbiology*; D010614:Pharynx / Q000382:microbiology; D013290:Streptococcal Infections / Q000382:microbiology*; D014069:Tonsillitis / Q000382:microbiology