Lelakowski, Jacek, Department of Electrocardiology, John Paul II Hospital, Krakow, Poland Institute of Cardiology, Jagiellonian University Medical College, Krakow, Poland Lelakowski, Jacek Lelakowski, Jacek, Klinika Elektrokardiologii, Instytut Kardiologii, Uniwersytet Jagielloński Collegium Medicum, Oddział Kliniczny Elektrokardiologii, Krakowski Szpital Specjalistyczny im. Jana Pawła II Lelakowski, Jacek, Department of Electrocardiology, John Paul II Hospital, Cracow, Poland. Institute of Cardiology, Jagiellonian University Medical College, Cracow, Poland. Lelakowski, Jacek, Department of Electrocardiology, The John Paul II Hospital in Krakow, Kraków, Institute of Cardiology, Jaciellonian University Collegium Medicum, Kraków (Poland) Lelakowski, Jacek Lelakowski, Jacek Lelakowski, Jacek (Poland) Lelek, Michał, I Katedra i Klinika Kardiologii Śląskiego Uniwersytetu Medycznego w Katowicach First Department of Cardiology, Medical University of Silesia Lelek, Michał, 1st Department of Cardiology, Medical University of Silesia, Upper Silesian Medical Centre, Katowice, Poland (Poland) Lelek, Michał Ł., 1st Department of Cardiology, Medical University of Silesia, Upper Silesian Medical Centre, Katowice, Poland Lelek, Michał Lelek, Michał Lelek, Michał Lelonek, Malgorzata, Medical University of Lodz Lelonek, Małgorzata, Department of Cardiology, Medical University of Lodz, Lodz, Poland Lelonek, Małgorzata, Medical University of Lodz, Department of Cardiology, Chair of Cardiology and Cardiac Surgery (Poland) Lelonek, Małgorzata, Chair of Cardiology, Cardiac Surgery and Vascular Diseases Medical University of Lodz Lelonek, Małgorzata, Department of Cardiology, Chair of Cardiology and Cardiac Surgery of Medical University w Łódź Lelonek, Małgorzata Lelonek, Małgorzata (Poland) Lelonek, Małgorzata Lelonek, Małgorzata Lenarczyk, Anna Lenarczyk, Radosław, Katedra Kardiologii, Wrodzonych Wad Serca i Elektroterapii, Śląski Uniwersytet Medyczny, Śląskie Centrum Chorób Serca