Khoury, M J Patterns and trends of multiple congenital anomalies in birth defects surveillance systems. [electronic resource] - Teratology Jul 1991 - 57-64 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0040-3709 Standard No.: 10.1002/tera.1420440110 doi Subjects--Topical Terms: Abnormalities, Drug-Induced--epidemiologyAbnormalities, Multiple--epidemiologyChromosome Aberrations--epidemiologyChromosome DisordersHumansPopulation SurveillanceSyndromeUnited States--epidemiology