Kelly, Paul A. Kempa, Andrzej Lubiński i Maciej, II Klinika Chorób Serca Instytutu Kardiologii Akademii Medycznej w Gdańsku Kempa, Maciej Kempa, Maciej, II Klinika Chorób Serca Instytutu Kardiologii Akademii Medycznej w Gdańsku Kempa, Maciej, Department of Cardiology and Electrotherapy, Medical University of Gdansk, Poland (Poland) Kempa, Maciej, 1Clinic of Cardiology and Electrotherapy, 2nd Chair of Cardiology, Medical University of Gdansk, Kempa, Maciej Kempa, Maciej Kempisty, Bartosz Kenny, Damien Kępka, Cezary Kępski, Roman Keren, Gad, TEL AVIV SOURASKY MEDICAL CENTER Kern, Adam, Warmińskie Centrum Kardiologii Wojewódzkiego Szpitala Specjalistycznego w Olsztynie Kern, Adam, Department of Cardiology, Voivodal Specialist Hospital in Olsztyn, Poland; Faculty of Medical Sciences, University of Warmia and Mazury, Olsztyn, Poland (Poland) Kern, Adam Kern, Adam, Faculty of Medical Sciences University of Warmia and Mazury, Olsztyn, Poland Kern, Adam Kervancioglu, Mehmet Keshavarzi, Friedon, MD Keskin, Mehmet Kessels, Jolien Ketcha, Arthur, School of Health Sciences, Catholic University of Central Africa, Yaoundé, Cameroon Khachatryan, Lusine Khadem, Aliasghar