1. Department of Electroradiology, University of Medical Sciences, Fredry 10, 61-701 Poznan, Poland
2. Greater Poland Cancer Centre, Garbary 15, 61-866 Poznan, Poland
3. Department of Oncology and Radiotherapy, Medical Faculty and University Hospital, Charles University, Sokolska 548, 500 05 Hradec Kralove, Czech Republic
4. 1st Department of Internal Medicine, Medical Faculty and University Hospital, Charles University, Sokolska 548, 500 05 Hradec Kralove, Czech Republic