del Castillo Arrojo, Silvia Del Pasqua, Alessia, Pediatric Cardiology and Cardiac Surgery Department Bambino Gesù Children’s Hospital Del Pasqua, Alessia (Italy) del Prado, Náyade del Val, David del-Carmen-Gonzalez-Colaso, Patricia Del-Rio-Ligorit, Alfonso Dell'Oro, Raffaella Della Riva, Diego, Department of Cardiology, University of Bologna Dello Russo, Antonio, Cardiac Arrhythmia Research Centre, Centro Cardiologico Monzino, IRCCS, Milan , Italy Dell`Aquila, Angelo Delnoy, Peter-Paul Dęmbe, Krzysztof Dembińska-Kieć, Józef Krzysieki i Aldona Demczuk, Marek Demidowicz, Krzysztof Demir, Ahmet Demir, Ibrahim Demir, Kenan Demir, Mehmet, Department of Cardiology, Bursa Yüksek İhtisas Education and R esearch Hospital, Bursa, Turkey Demır, Mustafa, Gulhane Medical Faculty Demır, Mustafa, Gulhane Medical Faculty, Dept. of Cardiology, Ankara, Turkey (Türkiye) Demir, Şerafettin, Department of Cardiology, Adana State Hospital, Adana, Turkey Demir, Tevfik, Eskisehir Osmangazi Universty, Pediatric Cardiology Department Demirbag, Recep