title: Commentary: numerous, heterogeneous, and often poor--the studies on childhood leukaemia and socioeconomic status.
authors.affiliation: Swiss Childhood Cancer Registry, Department of Social and Preventive Medicine, University of Berne, Switzerland. kuehni@ispm.unibe.ch
authors.forename: Claudia E
authors.initials: CE
authors.lastname: Kuehni
authors.forename: Marcel
authors.initials: M
authors.lastname: Zwahlen
mesh_terms: D002648:Child; D006801:Humans; D007938:Leukemia / Q000453:epidemiology* / Q000209:etiology*; D011203:Poverty / Q000706:statistics & numerical data*; D012042:Registries; D012923:Social Class