title: Epidemiology and virology of leukemia.
mesh_terms: D000818:Animals; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007564:Japan; D007938:Leukemia / Q000453:epidemiology / Q000382:microbiology; D051381:Rats; D014780:Viruses / Q000302:isolation & purification