title: Controversy concerning paternal age effect in 47, + 21 Down's syndrome.
authors.forename: A D
authors.initials: AD
authors.lastname: Carothers
mesh_terms: D004314:Down Syndrome / Q000235:genetics*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010331:Paternal Age; D012044:Regression Analysis; D014314:Trisomy