The National Down Syndrome Cytogenetic Register (NDSCR).
Alberman
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D000293:Adolescent; D000328:Adult; D003582:Cytogenetics; D004314:Down Syndrome / Q000175:diagnosis* / Q000453:epidemiology / Q000235:genetics*; D004739:England / Q000453:epidemiology; D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis / Q000453:epidemiology / Q000235:genetics; D006801:Humans; D008875:Middle Aged; D011247:Pregnancy; D011296:Prenatal Diagnosis / Q000706:statistics & numerical data*; D012042:Registries; D014852:Wales / Q000453:epidemiology