Etiologic heterogeneity among non-Hodgkin lymphoma subtypes: the InterLymph Non-Hodgkin Lymphoma Subtypes Project. - Morton LM; Slager SL; Cerhan JR; Wang SS; Vajdic CM; Skibola CF; Bracci PM; de Sanjosé S; Smedby KE; Chiu BC; Zhang Y; Mbulaiteye SM; et al. (Journal of the National Cancer Institute. Monographs, 2014)