1. Institute of Clinical Biochemistry and Diagnostics, Charles University, Faculty of Medicine, University Hospital, Sokolska 581, Hradec Kralove 50005;
2. 1st Department of Medicine;
3. 2nd Department of Medicine, Charles University, Faculty of Medicine, University Hospital, Hradec Kralove 50005;
4. Department of Oncology and 1st Faculty of Medicine, Thomayer University Hospital, Charles University, Prague 14059, Czech Republic