1. Institute of Preventive Medicine, Faculty of Medicine in Hradec Kralove, Charles University, Hradec Kralove, Czech Republic
2. Institute of Clinical Immunology and Allergology, University Hospital and Faculty of Medicine in Hradec Kralove, Charles University, Hradec Kralove, Czech Republic
3. Institute of Clinical Biochemistry and Diagnostics, University Hospital and Faculty of Medicine in Hradec Kralove, Charles University, Hradec Kralove, Czech Republic
4. Clinic of Dermal and Venereal Diseases, University Hospital, Hradec Kralove, Czech Republic
5. Institute of Pathological Physiology, Faculty of Medicine in Hradec Kralove, Charles University, Hradec Kralove, Czech Republic
6. Transfusion Center, University Hospital, Hradec Kralove, Czech Republic