1. Molecular Hematology, International Centre for Genetic Engineering & Biotechnology, Trieste, Italy;
2. Department of Immunology, Centre for Biostructure Research, Medical University of Warsaw, Warsaw, Poland;
3. Department of Hematology, Catholic University Hospital “A. Gemelli,” Rome, Italy; and
4. Department of Medical and Surgical Sciences, University of Trieste, Trieste, Italy