title: Transabdominal chorionic villus sampling.
authors.forename: M J
authors.initials: MJ
authors.lastname: McCormack
authors.forename: W E
authors.initials: WE
authors.lastname: Mackenzie
mesh_terms: D000005:Abdomen; D015193:Chorionic Villi Sampling / Q000379:methods* / Q000592:standards; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D011247:Pregnancy; D011261:Pregnancy Trimester, First