title: Death certificates as supplementary sources of information in epidemiologic studies of clefts.
mesh_terms: D000015:Abnormalities, Multiple / Q000453:epidemiology; D000367:Age Factors; D001719:Birth Certificates; D002971:Cleft Lip / Q000453:epidemiology*; D002972:Cleft Palate / Q000453:epidemiology*; D003644:Death Certificates; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D010855:Pierre Robin Syndrome / Q000453:epidemiology; D014481:United States