Monochorionic Twin Pregnancy Complicated by Right Ventricular Outflow Tract Obstruction (RVOTO) of one Fetus without Proof of a Twin-Twin Transfusion Syndrome - Eckmann-Scholz, C.; Diehl, W.; Kanzow, M.; Hecher, K. (Ultraschall in der Medizin - European Journal of Ultrasound, 2014)