WITOLD WOŹNIAK1*, MONIKA TARNAS2, TOMASZ MIŁEK1, R. KRZYSZTOF MLOSEK3 and PIOTR CIOSTEK1 1First Department of General and Vascular Surgery, Second Faculty of Medicine with the English Division and the Physiotherapy Division, Medical University of Warsaw, Warsaw, Poland 2Microbiology Department, Mazovian Bródnowski Hospital in Warsaw, Warsaw, Poland 3Department of Ultrasono...