1. Department of Infectious Diseases, Liver Diseases and Acquired Immune Deficiencies, Wroclaw Medical University, 51-149 Wroclaw, Poland
2. Faculty of Medicine, Wroclaw Medical University, 50-367 Wroclaw, Poland
3. Lower Silesian Oncology, Pulmonology and Hematology Center, 53-439 Wroclaw, Poland
4. Department of Infectious Diseases and Hepatology, Wroclaw Medical University, 51-149 Wroclaw, Poland