1. Department of Leukemia, MD Anderson Cancer Center, University of Texas, Houston, TX;
2. Department of Medicine and Surgery, University of Insubria, Varese, Italy;
3. Hematology and Bone Marrow Transplant Unit, Azienda Ospedaliera Papa Giovanni XXII, Bergamo, Italy;
4. Dipartimento di Oncologia ed Emato-Oncologia, University of Milan, Milan, Italy;
5. Center for the Study of Myelofibrosis, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Policlinico San Matteo Foundation, Pavia, Italy;
6. Department of Molecular Medicine, University of Pavia, Pavia, Italy;
7. Department of Hematology Oncology, IRCCS Policlinico San Matteo Foundation, Pavia, Italy;
8. Department of Oncology, Ospedale Santo Spirito, Casale Monferrato, Italy;
9. Center of Research and Innovation of Myeloproliferative Neoplasms, Azienda Ospedaliera Universitaria Careggi, Florence, Italy;
10. Department of Experimental and Clinical Medicine, Laboratorio Congiunto for Myeloproliferative Neoplasm, University of Florence, Florence, Italy;
11. Incyte Corporation, Wilmington, DE; and
12. Clinical Research Foundation (FROM), Ospedale Papa Giovanni XXIII, Bergamo, Italy