Ajaj, Tarek Ak, Ahmet Akagi, Satoshi Akar Bayram, Nihal, Yıldırım Beyazıt University, Faculty of Medicine, Department of Cardiology, Ankara Akashi, Yoshihiro J. Akbarzadeh, Fariborz Akboğa, Mehmet Kadri, Türkiye Yüksek Ihtisas Training and Research Hospital, Cardiology Clinic, Ankara, Turkey Akçay, Murat, Yıldırım Beyazıt University, Faculty of Medicine, Department of Cardiology Akçay, Murat, Yıldırım Beyazıt University, Faculty of Medicine, Department of Cardiology, Ankara Akdag, Serkan Akdemir, Ramazan Akdemir, Ramazan, Diskapi Research and Education Hospital, Cardiology Department, Ankara, Turkey Akdeniz, Celal, Mehmet Akif Ersoy Cardiovascular Research and Training Hospital, Istanbul, Turkey Akdogan, Ali, Hacettepe University Faculty of Medicine, Department of Internal Medicine, Division of Rheumatology, Ankara, Turkey. Akerström, Finn, Cardiac Arrhythmia and Electrophysiology Unit, Department of Cardiology, Hospital Virgen de la Salud, Toledo, Spain Akerström, Finn (Spain) Akgul, Ozgur, Mehmet Akif Ersoy Thorasic and Cardiovascular Surgery Training and Research Hospital Akgun, Taylan Akgun, Taylan, Kartal Kosuyolu Heart Education and Research Hospital, Istanbul (Türkiye) Akhras, Eyad Akil, Mehmet Ata Akin, Fatih Akın, Fatıh, Muğla Sıtkı Kocman Unıversıty,Medical Faculty ,Department Of Cardıology Muğla Akin, Ibrahim Akin, Ibrahim