Saskia A.M. van de Schans, Maryska L.G. Janssen-Heijnen, Marten R. Nijziel, Ewout W. Steyerberg and Dick Johan van Spronsen (2010) “Validation, revision and extension of the Mantle Cell Lymphoma International Prognostic Index in a population-based setting”, Haematologica. Pavia, Italy, 95(9), pp. 1503-1509. doi: 10.3324/haematol.2009.021113.