Klam, Stephanie L Prediction of growth discordance in twins with the use of abdominal circumference ratios. [electronic resource] - American journal of obstetrics and gynecology Jan 2005 - 247-51 p. digital Publication Type: Evaluation Study; Journal Article ISSN: 0002-9378 Standard No.: 10.1016/j.ajog.2004.06.036 doi Subjects--Topical Terms: Abdomen--diagnostic imagingBirth WeightCohort StudiesFemaleFetal Growth Retardation--diagnosisGestational AgeHumansInfant, NewbornPredictive Value of TestsPregnancyProspective StudiesQuebec--epidemiologyROC CurveSensitivity and SpecificityTwinsUltrasonography, Prenatal