Bielecki, Wojciech Bielińska, Barbara Bielis, Liliana Bielski, Andrzej Bielski, Karol Bielski, Karol (Poland) Bieniaszewski, Leszek Biering-Sørensen, Tor, Brigham and Women’s Hospital, Boston, MA Biering-Sørensen, Tor (Denmark) Biernacka, Elżbieta Katarzyna, Department of Congenital Heart Diseases, Institute of Car diology Warsaw Biernacka, Elżbieta Katarzyna, Institute of Cardiology, ul. Alpejska 42, 04-628 Warsaw Biernacka, Elżbieta, Institute of Cardiology, Congenital Heart Diseases Department, Warsaw, Poland Biernacka, Katarzyna Biernat, Jolanta Biernat, Jolanta, Department of Electrocardiology and Heart Failure, School of Health Sciences, Medical University of Silesia, Katowice, Poland (Poland) Biernat, Jolanta, Department of Electrocardiology and Heart Failure. Medical University of Silesia, Katowice Biernat, Jolanta (Poland) Bignon, Mathieu Bil, Jacek Bil, Jacek, Department of Invasive Cardiology, Central Clinical Hospital of the Ministry of Interior and Administration, Warsaw Bil-Lula, Iwona Bilan, Andrzej Bilato, Claudio Bilen, Emine, Ankara Ataturk Education and Research Hospital, Department of Cardiology Bilen, Emine, Ankara Education and research hospital, Ankara,Turkey