Genetic counseling and the presenile dementias.
D000367:Age Factors; D000544:Alzheimer Disease / Q000235:genetics; D003704:Dementia / Q000235:genetics*; D005260:Female; D005817:Genetic Counseling; D030342:Genetic Diseases, Inborn; D006801:Humans; D006816:Huntington Disease / Q000235:genetics; D008297:Male; D012306:Risk; D018570:Risk Assessment