conclusions this study showed that some lifestyle factors, particularly exposure to radiation, chemicals, pesticides, and contact with pets or livestock, can play an important role in etiology of leukemia. results exposure to radiation (p = 0.0001), chemicals (p = 0.02), pesticides (p = 0.01), and contact with pets or livestock (p = 0.0001) were associated with the risk of leukemia, but a histo...