2 Division of Hematopathology, Mayo Clinic, Rochester, MN.
3 Department of Hematology, Université de Montréal, Montréal, Quebec, Canada.
4 Section of Hematology, Department of Radiological and Hematological Sciences, Catholic University, Fondazione Policlinico A. Gemelli IRCCS, Rome, Italy.
5 Research Foundation, Papa Giovanni XXIII Hospital, Bergamo, Italy; and.
6 Department of Experimental and Clinical Medicine, CRIMM, Center Research and Innovation of Myeloproliferative Neoplasms, Azienda Ospedaliera Universitaria Careggi, University of Florence, Florence, Italy.