Comparison of conventional prognostic indices in patients older than 60 years with diffuse large B-cell lymphoma treated with R-CHOP in the US Intergroup Study (ECOG 4494, CALGB 9793): consideration of age greater than 70 years in an elderly prognostic index (E-IPI). Advani, Ranjana H , Chen, Haiyan , Habermann, Thomas M ... - - Br. J. Haematol. - 2010 Manuscript - Secondary-not-in-original - Primary - Older Adult - C9793