On the probable role of oncogenic viruses in human epidemiology.
D002051:Burkitt Lymphoma / Q000209:etiology; D004196:Disease Outbreaks; D006564:Herpesviridae; D006801:Humans; D007938:Leukemia / Q000209:etiology*; D009303:Nasopharyngeal Neoplasms / Q000209:etiology; D009858:Oncogenic Viruses; D012190:Retroviridae