title: Chorion biopsy, cytogenetic diagnosis, and selective termination in a twin pregnancy at risk of haemophilia.
mesh_terms: D000028:Abortion, Induced / Q000379:methods*; D000328:Adult; D001706:Biopsy; D002824:Chorionic Villi / Q000473:pathology*; D003581:Cytodiagnosis; D004200:Diseases in Twins; D005260:Female; D006467:Hemophilia A / Q000175:diagnosis* / Q000235:genetics; D006801:Humans; D008297:Male; D011247:Pregnancy; D011296:Prenatal Diagnosis