1. Department of Human Pathology, University of Messina, Messina, Italy
2. Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy
3. Lymphoma Service, Memorial Sloan Kettering Cancer Center, New York, NY, USA
4. Department of Hematology and Center of Bone Marrow Transplantation, Hospital of Bolzano, Bolzano/Bozen, Italy
5. Department of Internal Medicine V, Hematology & Oncology, Medical University Innsbruck, Innsbruck, Austria