1. Department of Oncology , Wroclaw Medical University , Wroclaw , Poland
2. Wroclaw Comprehensive Cancer Center , Wroclaw , Poland
3. Laboratory of Immunopathology, Department of Experimental Therapy, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences , Wroclaw , Poland
4. Department of Public Health , Wrocław Medical University , Wrocław , Poland
5. Lower Silesian Cancer Registry, Wroclaw Comprehensive Cancer Center , Wroclaw , Poland