title: Factual, statistical and logical issues in the search for a paternal age effect for Down syndrome.
authors: E B
authors: EB
authors: Hook
authors: P K
authors: PK
authors: Cross
authors: R R
authors: RR
authors: Regal
mesh_terms: D004314:Down Syndrome / Q000235:genetics*; D006801:Humans; D008297:Male; D010331:Paternal Age; D015203:Reproducibility of Results; D013223:Statistics as Topic