title: Bidirectional asynchronous arterial flow in monochorionic twins--a precursor to the twin reverse arterial perfusion sequence.
authors.affiliation: Department of Obstetrics and Gynaecology (Maternal Fetal Medicine), McGill University Health Centre, Montreal, Canada.
authors.forename: Richard N
authors.initials: RN
authors.lastname: Brown
authors.forename: Angela
authors.initials: A
authors.lastname: Mallozzi
authors.forename: David
authors.initials: D
authors.lastname: Valenti
mesh_terms: D018568:Crown-Rump Length; D005260:Female; D047109:Fetal Development; D005330:Fetofetal Transfusion / Q000000981:diagnostic imaging* / Q000503:physiopathology / Q000601:surgery; D006340:Heart Rate, Fetal; D006801:Humans; D011247:Pregnancy; D018607:Pregnancy Reduction, Multifetal; D059285:Pregnancy, Twin; D016216:Ultrasonography, Prenatal