Birth defect surveillance data from selected states, 1989 - 1996.
D000367:Age Factors; D000013:Congenital Abnormalities / Q000208:ethnology*; D006801:Humans; D011159:Population Surveillance; D044469:Racial Groups; D013220:State Health Planning and Development Agencies / Q000706:statistics & numerical data*; D014314:Trisomy; D014481:United States / Q000453:epidemiology