Atrioventricular Septal Defect in the Fetus – Associated Conditions and Outcome in 246 Cases - Berg, C; Kaiser, C; Bender, F; Geipel, A; Kohl, T; Axt-Fliedner, R; Krapp, M; Knöpfle, G; Herberg, U; Breuer, J; Schmitz, C; Gembruch, U (Ultraschall in der Medizin - European Journal of Ultrasound, 2009)