1. Institute of Dermatology; University of Pavia and Foundation IRCCS Policlinico S. Matteo; Pavia; Italy
2. Institute of Hematology; University of Pavia and Foundation IRCCS Policlinico S. Matteo; Pavia; Italy
3. Department of Pathology; University of Pavia and Foundation IRCCS Policlinico S. Matteo; Pavia; Italy