Białek, Krzysztof Białek, Sławomir, Department of Medical Laboratory Diagnostics, Faculty of Pharmacy with Laboratory Medicine Division, Medical University of Warsaw, Warsaw, Poland Białek, Sławomir Białkowska, Beata, Students Scientific Circle, Department of Cardiology, Congenital Heart Diseases and Electrotherapy, Silesian University of Medicine, Silesian Centre for Heart Diseases Białkowska, Bożena Białkowski, Jacek, Siesian Center for Heart Diseaes Białkowski, Jacek, Śląskie Centrum Chorób Serca (Poland) Białkowski, Jacek Białkowski, Jacek, Department of Congenital Heart Disease and Pediatric Cardiology, Silesian Center for Heart Diseases, Medical University of Silesia Białkowski, Jacek Białkowski, Jacek, Silesian Center for Heart Diseases (Poland) Białkowski, Jacek Białkowski, Jacek Białobrzeska-Paluszkiewicz, Janina Białoszyński, Tomasz Biały, Dariusz Bichovsky, Yoav Biczysko, Wiesława Bidiuk, Joanna Biederman, Andrzej, Department of Cardiac Surgery, Allenort Hospital, Warsaw Biederman, Andrzej Biederman, Andrzej (Poland) Biederman, Andrzej Biedermann, Andrzej Biegalski, Wojciech