1. Department of General Pathomorphology, Medical University of Bialystok, Bialystok, Poland;
2. Department of Pathology (NZOZ Zakład Patologii Spółka z o.o.), Non-Public Health Care Unit, Kielce, Poland;
3. Department of Pathology, Maria Sklodowska-Curie Memorial Bialystok Oncology Center, Bialystok, Poland