1. Department of Dermatology, Medical University of Lodz, 90-647 Lodz, Poland
2. Department of Pathology, Medical University of Lodz, 92-213 Lodz, Poland
3. Department of Hematology, Medical University of Lodz, 93-510 Lodz, Poland
4. Department of General Hematology, Copernicus Memorial Hospital, 93-510 Lodz, Poland