Łoboz-Grudzień, Krystyna Łoboz-Grudzień, Krystyna, Department of Cardiology, T. Marciniak Hospital, Wrocław Medical University, Public Health Faculty, Wrocław, Poland Łoboz-Grudzień, Krystyna Łoboz-Rudnicka, Maria, Department of Cardiology, T. Marciniak Hospital, Wroclaw, Poland Łodyga, Małgorzata Łojewska, Katarzyna, Department of Cardiology, Multidisciplinary District’s Hospital, Now Sól, Poland Łojko, Piotr Łopatowska, Paulina, Department of Cardiology, Medical University in Bialystok Białystok Łoś, Andrzej Łoś-Stolarczyk, Maria Łuczak, Dariusz, Klinika Choroby Wieńcowej Instytutu Kardiologii w Warszawie Łuczak, Ilona Kowalik i Dariusz Łuczak, Katarzyna Łuczak, Maciej Łuczak, Tomasz, Department of Cardiology, J. Strus Hospital, Poznan, Poland Łukasik, Karolina Łukaszewska, Anna, I Department of Cardiology and Hypertension, Institute of Cardiology, Jagiellonian University Medical College Łyczek, Jarosław Łysek, Radosław, Department of Clinical Epidemiology and Population Studies, Institute of Public Health, Jagiellonian University Medical College, Krakow Łysek, Radosław P., Department of Epidemiology and Population Studies, Institute of Public Health, Jagiellonian University Medical College, Krakow, Poland “Club 30” of the Polish Cardiac Society, On behalf of