1. Department of Histology and Embryology, Pomeranian Medical University, 70-111 Szczecin, Poland
2. Department of Hematology, Oncology and Palliative Care, Evangelisches Krankenhaus Hamm, 59063 Hamm, Germany
3. Department of Nephrology, Transplantology and Internal Diseases, Pomeranian Medical University, 70-111 Szczecin, Poland
4. Department of Signal Processing and Multimedia Engineering, West Pomeranian University of Technology in Szczecin, 71-126 Szczecin, Poland