1. Institute of Haematology Medicine; University of Perugia; Perugia; Italy
2. Department of Histopathology; University College Hospital; London; UK
3. Unit of Haematopathology; Department of Haematology and Oncological Sciences ‘L. and A. Seràgnoli’; University of Bologna; Bologna; Italy
4. Pathodiagnostik Berlin; Berlin Reference and Consultation Centre for Lymphoma and Haematopathology; Berlin; Germany