scientific article
author: Andrzej Bojarski, Bernadeta Szewczyk, Gabriel Nowak, Jadwiga Turło, Katarzyna Stachowicz, Mariusz Belka, Tomasz Baczek, Agata Siwek, Marek Król, Grzegorz Ślifirski, Jerzy Kleps, Franciszek Herold
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