title: Genealogical studies in families with oral clefts and reference families.
mesh_terms: D000368:Aged; D002648:Child; D002971:Cleft Lip / Q000453:epidemiology / Q000235:genetics*; D002972:Cleft Palate / Q000453:epidemiology / Q000235:genetics*; D003710:Demography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013548:Sweden