title: Chromosome abnormalities in children of mothers 40 years of age or more. A retrospective investigation of a six-year hospital material.
mesh_terms: D002869:Chromosome Aberrations / Q000453:epidemiology* / Q000235:genetics; D025063:Chromosome Disorders; D003718:Denmark; D004314:Down Syndrome / Q000453:epidemiology / Q000235:genetics; D005260:Female; D005817:Genetic Counseling; D006801:Humans; D007231:Infant, Newborn; D008423:Maternal Age; D008875:Middle Aged; D011247:Pregnancy; D011296:Prenatal Diagnosis; D012189:Retrospective Studies; D012729:Sex Chromosome Aberrations / Q000453:epidemiology / Q000235:genetics