title: Genetic risk factors in human trisomy 21.
authors.affiliation: Department of Medical Genetics, J. F. Kennedy Institute, Glostrup, Denmark.
authors.forename: M
authors.initials: M
authors.lastname: Mikkelsen
authors.forename: H
authors.initials: H
authors.lastname: Poulsen
authors.forename: N
authors.initials: N
authors.lastname: Tommerup
mesh_terms: D000328:Adult; D002873:Chromosome Fragility; D004314:Down Syndrome / Q000235:genetics*; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007621:Karyotyping; D008297:Male; D008423:Maternal Age; D009630:Nondisjunction, Genetic; D010331:Paternal Age; D012307:Risk Factors; D012744:Sex Ratio; D014178:Translocation, Genetic