1. Department of Haematology, Medical University of Bialystok, Bialystok, Poland
2. CEMBIO, Centre for Metabolomics and Bioanalysis, San Pablo CEU University, Madrid, Spain
3. Clinical Research Centre, Medical University of Bialystok, Bialystok, Poland
4. Clinical Oncology and Hematology Department, Provincial Hospital, Suwalki, Poland