title: BRCA mutation frequency and penetrance: new data, old debate.
authors.forename: Kenneth
authors.initials: K
authors.lastname: Offit
mesh_terms: D001943:Breast Neoplasms / Q000235:genetics*; D015331:Cohort Studies; D005260:Female; D005787:Gene Frequency; D019398:Genes, BRCA1; D024522:Genes, BRCA2; D006801:Humans; D008297:Male; D009154:Mutation; D018570:Risk Assessment