Kalinowski, Mariusz Kaliszczak, Robert Kalkan, Ali Kemal, Mehmet Akif Ersoy Thorasic and Cardiovascular Surgery Training and Research Hospital Kalkan, Ali Kemal, Mehmet Akif Ersoy Thoracic and Cardiovascular Surgery Training and Research Hospital (Türkiye) Kalkan, Ali Kemal, Mehmet Akif Ersoy Thoracic and Cardiovascular Surgery Education and Training Hospital, Department of Cardiology, Istanbul Kalkan, Ali Kemal, Department of Cardiology, Mehmet Akif Ersoy Thoracic and Cardiovascular Surgery Training and Research Hospital, Istanbul, Turkey Kalkan, Mehmet Emin Kalkan, Mehmet Emin, Kartal Kosuyolu Training and Research Hospital, Department of Cardiology, Istanbul (Türkiye) Kalnk-Szafran, Monika Kalpak, Oliver Kälsch, Anna-Isabelle Kälsch, Thorsten Kälsch, Thorsten (Germany) Kaluza, Grzegorz L. Kamada, Rui Kamal, Muhammad Umar, Sarver Heart Center, Division of Cardiology, Department of Medicine, Banner-University Medical Center, Tucson, United States Kamath, Ganesh S., Al-Sabah Arrhythmia Institute and Division of Cardiology, St. Luke’s and Roosevelt Hospitals, Columbia University College of Physicians and Surgeons, New York, NY, USA Kamath, Ganesh S., St. Luke’s and Roosevelt Hospitals, USA Kamel, Shaimaa Kaminska, Halla Kaminska, Halla Kamińska, Halszka Kamiński, Bogumił Kamiński, Grzegorz Kamiński, Grzegorz Wiktor