Hsieh, C C Prenatal diagnosis of major congenital cardiovascular malformations. [electronic resource] - Gynecologic and obstetric investigation 1996 - 84-7 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0378-7346 Standard No.: 10.1159/000291897 doi Subjects--Topical Terms: Echocardiography--methodsFemaleHeart Defects, Congenital--diagnostic imagingHumansIncidencePregnancyProspective StudiesRisk FactorsTaiwanUltrasonography, Prenatal--methods