title: Routine prenatal determination of chorionicity in multiple gestation: a plea to the obstetrician.
authors.affiliation: Royal Postgraduate Medical School, Institute of Obstetrics and Gynaecology, Queen Charlotte's & Chelsea Hospital, London.
authors.forename: N M
authors.initials: NM
authors.lastname: Fisk
authors.forename: E
authors.initials: E
authors.lastname: Bryan
mesh_terms: D002823:Chorion / Q000000981:diagnostic imaging*; D005260:Female; D005330:Fetofetal Transfusion / Q000000981:diagnostic imaging; D005865:Gestational Age; D006801:Humans; D011247:Pregnancy; D011272:Pregnancy, Multiple; D012727:Sex Characteristics; D016216:Ultrasonography, Prenatal