1. Institute of Pathology University of Cologne Cologne Germany
2. University Clinic Wuppertal University of Witten/Herdecke Wuppertal Germany
3. Department of Pathology Texas Tech University Health Sciences Center El Paso Texas USA
4. Department of Health Sciences and S.C. Anatomia Patologica, ASST Santi Paolo e Carlo University of Milan Milan Italy
5. Division of Hematology, Department of Internal Medicine Mayo Clinic Rochester Minnesota USA
6. CRIMM‐Centro Ricerca e Innovazione delle Malattie Mieloproliferative, Azienda Ospedaliera‐Universitaria Careggi, Department of Experimental and Clinical Medicine University of Florence Florence Italy
7. FROM Research Foundation Papa Giovanni XXIII Hospital Bergamo Italy
8. Department of Pathology University of Chicago Chicago Illinois USA