Kosobucka, Agata Kosowski, Michał, Cardiology Department, Centre for Heart Diseases, 4th Military Hospital, Wroclaw, Poland Department of Heart Diseases, Wroclaw Medical University, Wroclaw, Poland Kossakowska-Jemioło, Urszula Kossuth, Irmina Kostecka-Pokryszko, Alicja Kostek, Osman, Istanbul Medeniyet University, Faculty of Medicine, Department of Internal Medicine, Goztepe Training and Research Hospital, Istanbul, Turkey. Kostic, Tomislav, Clinic for cardiovascular diseases, Clinical Center Nis, Serbia; Medical Faculty, University of Nis, Serbia Kostka-Jeziorny, Katarzyna Kostkiewicz, Jadwiga Jośko i Marcin, Katedra i Zakład Medycyny i Epidemiologii Środowiskowej w Zabrzu, Śląska Akademia Medyczna w Katowicach Kostkiewicz, Magdalena Kostkiewicz, Magdalena Kostkiewicz, Magdalena (Poland) Kostkiewicz, Marcin Kostkiewicz, Mieczysław Pasowicz i Magdalena Kostrubiec, Maciej, Department of Internal Medicine and Cardiology, The Medical University of Warsaw, Poland Kostrubiec, Maciej Kostrubiec, Maciej (Poland) Kosydar-Piechna, Magdalena, Department of Cardiac Rehabilitation and Noninvasive Electrocardiology, Institute of Cardiology, Warsaw, Poland Kosydar-Piechna, Magdalena Kőszegi, Zsolt, University of Debrecen Kőszegi, Zsolt Kot, Adrian Koteja, Andrzej, Department of Anesthesiology and Intensive Care, European Health Centre, Otwock Kotkowski, Marcin, 1st Department of Cardiology Medical University of Warsaw 1a Banacha Street 02-097 Warsaw, Poland Kotliński, Krzysztof