Erer, Hatice Betül Ergelen, Mehmet Ergene, Oktay, Department of Cardiology, Faculty of Medicine, Izmir Dokuz Eylul University, Izmir, Turkey Ergul, Nurhan Ergul, Yakup, Department of Pediatric Cardiology, Istanbul University, Istanbul Faculty of Medicine, Turkey Ergul, Yakup Ergul, Yakup Erhart, Ladina Eriksson, Urs Eriksson, Urs (Switzerland) Erkan, Hakan Erkan, Hakan Erkol, Ayhan, Kocaeli Derince Training and Research Hospital Ibni Sina Bl. Derince 41900 Kocaeli Erne, Paul, Heart Centre Lucerne, Luzerner Kantonsspital, Lucerne, Switzerland Erol, Cetin, Cardiology Department, Ankara University Ankara Erol, Mustafa Kemal, Mehmet Akif Ersoy Thorasic and Cardiovascular Surgery Training and Research Hospital Ersoy, Osman, Yıldırım Beyazıt University Faculty of Medicine, Department of Gastroenterology, Ankara, Turkey Ertas, Faruk, Medical School of Dicle University Ertaş, Faruk, Dicle University Faculty of Medicine, Department of Cardiology, Diyarbakır Ertem, Ahmet Göktuğ, Türkiye Yüksek Ihtisas Training and Research Hospital, Cardiology Clinic, Ankara, Turkey Ertugrul, Derun Taner, Kecioren Teaching and Research Hospital Erturk, Mehmet, Department of Cardiology, Istanbul Mehmet Akif Er soy Thoracic and Car diovascular Surgery Training and Research Hospital, Istanbul, Turkey Erturk, Mehmet, Mehmet Akif Ersoy Thoracic and Cardiovascular Surgery Training and Research Hospital Erturk, Mehmet, Mehmet Akif Ersoy Thoracic and Cardiovascular Surgery Training and Research Hospital, Department of Cardiology, Istanbul Eryol, Namik Kemal