title: Down syndrome: maternal age in 615 cases in india and its implications in genetic counseling.
mesh_terms: D000293:Adolescent; D000328:Adult; D004314:Down Syndrome / Q000453:epidemiology* / Q000517:prevention & control; D005260:Female; D005817:Genetic Counseling; D006801:Humans; D007194:India; D008423:Maternal Age