There are contradictory studies about the role of
paternal employment in jobs in which exchanges with other people (“social mixing”) are frequent, such as policemen, military guards and teachers in the etiology of childhood leukemia. We studied 84
incident cases of childhood leukemia and 162 nephrologic controls, selected in University Hospital Policlinico of Bari”. Cases and controls, recruited on the basis of precise criteria, were subjected to
blood sampling and administration of standardized questionnaire by
trained personnel. Genetic polymorphisms of CYP1A1 ..
