Pietrucha, Tadeusz, Department of Medical Biotechnology, Medical University of Lodz, Poland Pietruk-Kowalczyk, Jolanta Pietruszewski, Jerzy Pietrzak, Jaroslaw, II Cardiology Clinic; University Hospital no 2; Collegium Medicum Nicolaus Copernicus University in Torun, Poland Pietrzak, Jarosław Pietrzak, Radosław, Department of Paediatric Cardiology and General Paediatrics, Medical University of Warsaw, Warsaw, Poland Pietrzak, Radosław Pietrzak, Radosław Pietrzak, Radosław Pietrzkiewicz, Krzysztof Pietrzycka, Agata Pietrzyk, Edward, Department of Cardiosurgery, Swietokrzyskie Centre of Cardiology, Kielce, Poland Pietrzyk, Edward Pietrzyk, Edward, Oddział Kardiochirurgii, Świętokrzyskie Centrum Kardiologii, Kielce (Poland) Pietrzyk, Edward, Oddział Kardiochirurgii Świętokrzyskie Centrum Kardiologii Pietrzyk, Edward (Poland) Pietrzyk, Edward, Klinika Kardiochirurgii Świętokrzyskie Centrum Kardiologii Pietrzyk, Edward Pietura, Radosław, Dept of Interventional Radiology and Neuroradiology, Medical University of Lublin Pietura, Radosław, Department of Radiography, Medical University of Lublin (Poland) Pietura, Radosław, Department of Radiography, Medical University of Lublin, Poland Pietura, Radosław (Poland) Pietura, Radosław Pighi, Michele Pignatelli, Pasquale