title: So many needles, so much hay.
authors.affiliation: Unit on Molecular Genetics, National Institute of Mental Health, Bethesda, MD 20892-4405, USA.
authors.forename: M B
authors.initials: MB
authors.lastname: Brennan
authors.forename: U
authors.initials: U
authors.lastname: Hochgeschwender
mesh_terms: D002874:Chromosome Mapping / Q000379:methods; D006801:Humans