Completeness and accuracy of reporting of malformations on birth certificates.
D000043:Abstracting and Indexing; D001719:Birth Certificates / Q000592:standards*; D000013:Congenital Abnormalities / Q000175:diagnosis / Q000453:epidemiology*; D006761:Hospitals; D006801:Humans; D007231:Infant, Newborn; D007484:Iowa; D008499:Medical Records; D011676:Punched-Card Systems