T Barbui, G Barosi, A Grossi, L Gugliotta, LN Liberato, M Marchetti, MG Mazzucconi, F Rodeghiero, S Tura. Practice guidelines for the therapy of essential thrombocythemia. A statement from the Italian Society of Hematology, the Italian Society of Experimental Hematology and the Italian Group for Bone Marrow Transplantation. Haematologica 2004;89(2):215-232; https://doi.org/10.3324/%x.