Affiliation: | 1. Department of Head and Neck Surgery, Greater Poland Cancer Centre, Poznan University of Medical Sciences, Garbary 15, 61-866, Poznan, Poland 2. Department of Biology and Enviromental Studies, Poznan University of Medical Sciences, Dluga ?, 61-848, Poznan, Poland 3. Department of Dermatology, Poznan University of Medical Sciences, Przybyszewskiego 49, Poznan, Poland 4. Department of Rehabilitation in Internal Medicine, University School of Physical Education, Poznan, Poland
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