Open access peer-reviewed chapter
By Kita Jerzy, Anusz Krzysztof, Salwa Andrzej, Welz Mirosław, Orłowska Blanka and Zaleska Magdalena
Submitted: July 4th 2011Reviewed: December 7th 2011Published: April 4th 2012
© 2012 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution 3.0 License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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