title: A survey of obstetric practice in the Trent region in relation to the prevention of Down's syndrome.
mesh_terms: D000328:Adult; D000649:Amniocentesis; D001291:Attitude of Health Personnel; D004314:Down Syndrome / Q000175:diagnosis* / Q000517:prevention & control; D004739:England; D005260:Female; D006801:Humans; D009774:Obstetrics; D011247:Pregnancy