scientific article published on October 1, 2001
author: Zbigniew Gonciarz, Janusz Cianciara, Piotr Piszko, Jacek Juszczyk, Marta Wawrzynowicz-Syczewska, Joanna Kozłowska, Andrzej Gładysz, Wiesław Kryczka, Dorota Zarębska-Michaluk, Hanna Trocha
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