1. Department of Clinical Pathology; Uniwersytet Medyczny imienia Karola Marcinkowskiego w Poznaniu; Poznan Poland
2. Department of Pathology; University Hospital of Lord's Transfiguration; Partner of Poznan University of Medical Sciences; Poznan Poland
3. Wielkopolskie Centrum Onkologii; Poznan Poland
4. Department of Pediatric Oncology, Hematology and Transplantology; Uniwersytet Medyczny imienia Karola Marcinkowskiego w Poznaniu; Poznan Poland
5. Department of Pathology; Massachusetts General Hospital and Harvard Medical School; Boston USA