Challenging right ventricular pacing in a patient with transitional atrioventricular septal defect. - Stoiculescu, Flavia-Mihaela; Hădăreanu, Diana-Ruxandra; Ungureanu, Adrian; Moise, Cristiana Gianina; Florescu, Cristina; Donoiu, Ionuţ (Romanian Journal of Cardiology, 2025)