Juan-Carlos Hernández-Boluda, Arturo Pereira, Montse Gómez, Concepción Boqué, Francisca Ferrer-Marín, José-María Raya, Valentín García-Gutiérrez, Ana Kerguelen, Blanca Xicoy, Pere Barba, Jesús Martínez, Elisa Luño, Alberto Alvarez-Larrán, Joaquín Martínez-López, Elisa Arbelo and Carles Besses (2014) “The International Prognostic Scoring System does not accurately discriminate different risk categories in patients with post-essential thrombocythemia and post-polycythemia vera myelofibrosis”, Haematologica. Pavia, Italy, 99(4), pp. e55-e57. doi: 10.3324/haematol.2013.101733.