1. Hematology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
2. Hematology Department, James Cook University Hospital, South Tees Trust (NHS), Middlesbrough, UK
3. Dermatology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
4. Hematology, Policlinico GB Rossi, Verona, Italy
5. Dermatology, Department of Experimental, Diagnostic & Specialty Medicine, University of Bologna, Bologna, Italy
6. Immunology & Allergology, University of Salerno, Salerno, Italy
7. Pediatric Dermatology, DIMED, University of Padua, Padua, Italy
8. Dermatololgy & Venerology, Hospital of Brunico, Italy
9. Allergology & Immunology, Niguarda Hospital, Milano, Italy
10. Center of Research & Innovation of Myeloproliferative Neoplasms (CRIMM), Careggi University Hospital/University of Florence, Florence, Italy
11. Hematology, University of Bologna, Bologna, Italy
12. Allergy Unit, Sant'Anna Hospital, Como, Italy
13. Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico di Milano, Milan, Italy
14. Pediatric, University of Cagliari, Cagliari, Italy
15. Hematology, San Raffaele Hospital, Milano, Italy
16. Dermatology, University of Florence, Florence, Italy
17. Hematology, University of Siena, Siena, Italy
18. Dermatology, University of Parma, Parma, Italy
19. Divisione di Ematologia, Ospedale San Gerardo, ASST Monza, Italy
20. Hematology, Ospedale di Cesena, Cesena, Italy
21. Gastroenterology, Fondazione IRCCS Policlinico San Matteo, University of Pavia, Pavia, Italy
22. Internal Medicine, IRCCS, Policlinico San Matteo, Pavia, Italy
23. Pediatric Department, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
24. Pathology Department, Fondazione IRCCS Policlinico San Matteo, Pavia, University of Pavia, Italy
25. Allergology, Ospedale Civile Maggiore, Verona, Italy
26. Ematologia, Sapienza Università di Roma, Azienda Policlinico Umberto I Roma, Italy
27. Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
28. Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria