Klank-Szafran, Janusz Sielski i Monika Klapkowski, Andrzej Klaudel, Barbara Klaudel, Jacek Klecha, Artur Klecha, Artur (Poland) Kleczyński, Paweł, Institute of Cardiology, Jagiellonian University, Krakow, Poland Kleczyński, Paweł, Institute of Cardiology, Krakow, Poland Kleczyński, Paweł Kleczyński, Paweł (Poland) Klee, Katharina Klein, George J. Klein, Helmut U., University of Rochester Medical Center, Heart Research Follow-up Program, Rochester, NY, USA Klein-Wiele, Oliver, Department of Cardiology, University of Witten/Herdecke, Essen, Germany Grönemeyer Institute, University of Witten/Herdecke, Essen, Germany Kleinecke, Caroline Kleinecke, Caroline, Medical Clinic II (Cardiology/Intensive Care Medicine), Ketschendorfer Straße 33, 96450 Coburg, Germany, Tel. +49 9561 22 33215, Fax +49 9561 226419 Kleinrok, Andrzej Kleinrok, Andrzej, Szpital im. Papieża Jana Pawła II w Zamościu (Poland) Kleinrok, Andrzej Kleinrok, Andrzej Klemenska, Emila, Department of Clinical Physiology, Medical Centre of Postgraduate Education, Warszawa, Poland Klempfner, Robert, Cardiac Rehabilitation Institute, Sackler Faculty of Medicine, Tel-Aviv, Israel Leviev Heart Institute, Sackler Faculty of Medicine, Tel-Aviv, Israel Israeli Society for the Prevention of Heart Attacks, Chaim Sheba Medical Center, Tel-Hashomer, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel Klempfner, Robert, Sheba Medical Center Tel Aviv University Kleszczewska, Magdalena Klich-Rączka, Alicja