Reberdao, Maria Augusta The source of error in the estimation of intertwin birth weight discordance. [electronic resource] - Journal of perinatal medicine 11 2010 - 671-4 p. digital Publication Type: Journal Article ISSN: 1619-3997 Standard No.: 10.1515/jpm.2010.104 doi Subjects--Topical Terms: Birth Weight--physiologyCohort StudiesFemaleHumansInfant, NewbornPregnancyPregnancy, Multiple--physiologyProspective StudiesSensitivity and SpecificityTwins--physiologyUltrasonography, Prenatal--methods