Value of Canadian hospital insurance records in detecting increases in congenital anomalies.
D000015:Abnormalities, Multiple / Q000453:epidemiology; D001723:Birth Rate; D003201:Computers; D000013:Congenital Abnormalities / Q000453:epidemiology*; D005260:Female; D005313:Fetal Death / Q000453:epidemiology; D006801:Humans; D007223:Infant; D007226:Infant Mortality; D007231:Infant, Newborn; D007350:Insurance, Hospitalization; D008297:Male; D008499:Medical Records; D008722:Methods; D008843:Microfilming; D009674:Nova Scotia; D011247:Pregnancy; D011676:Punched-Card Systems; D013637:Tape Recording