Down's syndrome screening in the UK.
Reynolds
T M
TM
D000649:Amniocentesis; D004314:Down Syndrome / Q000453:epidemiology / Q000517:prevention & control*; D005260:Female; D006801:Humans; D016365:Liability, Legal; D011247:Pregnancy; D012307:Risk Factors; D006113:United Kingdom / Q000453:epidemiology