Incidence of cystic fibrosis in black children--revisited.
D001741:Black or African American; D002648:Child; D003550:Cystic Fibrosis / Q000453:epidemiology*; D004219:District of Columbia; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000453:epidemiology; D009519:New York City