1. National Institute of Health, National Cancer Institute. Cancer stat fact sheets. Available at: www.seer.cancer.gov/statfacts/html. Accessed May 8, 2016.
2. WHO classification of tumors of hematopoietic and lymphoid tissues;Swerdlow,2008
3. Utility of FDG-PET scanning in lymphoma by WHO classification;Elstrom;Blood,2003
4. A predictive model for aggressive non-Hodgkin’s lymphoma. The International Non-Hodgkin’s lymphoma prognostic factors project;Shipp;N Engl J Med,1993
5. Standard International Prognostic Index remains a valid predictor of outcome for patients with aggressive CD20+ B-cell lymphoma in the rituximab era;Ziepert;J Clin Oncol,2010