1. Unit of Haematopathology; European Institute of Oncology; Milan Italy
2. Department of Pathology; University of Antioquia; Medellin Colombia
3. III Division of Infectious Diseases; Luigi Sacco Hospital; Milan Italy
4. Department of Experimental Diagnostic and Specialty Medicine; University of Bologna; Bologna Italy
5. Section of Infectious Diseases and Immunopathology; Luigi Sacco Hospital; Milan Italy
6. Bologna University School of Medicine; Bologna Italy