Leszczyński, Jerzy, Department Of General And Thoracic Surgery, Medical University Of Warsaw Leszczynski, Jerzy, Warszawski Uniwersytet Medyczny Lewandowska, Katarzyna Lewandowski, Krzysztof Lewandowski, Maciej Lewszuk, Adam Liapis, C.D. Liberek, Iwona Ligęza, Jerzy Liougkos, Athanasios Lisiak, Emil Litarski, Andrzej Loftus, Ian Lubiński, Wojciech Lubos, Leszek Lukasiewicz, Aleksander, Doctor Wladyslaw Bieganski Regional Specialty Hospital in Grudziadz, Poland Lukawski, Krzysztof, Department of General, Vascular and Transplant Surgery Medical University of Warsaw, Poland Macech, Michal, Department of General, Vascular and Transplant Surgery Medical University of Warsaw, Poland Macech, Michał Macech, Michał (Poland) Machoy, Zygmunt Maciag, Rafal, Warszawski Uniwersytet Medyczny Maciąg, Rafał Maciejewski, Marcin Macioch, Waldemar