title: Allergy and the risk of childhood leukemia: a meta-analysis.
authors: S
authors: S
authors: Dahl
authors: L S
authors: LS
authors: Schmidt
authors: T
authors: T
authors: Vestergaard
authors: J
authors: J
authors: Schüz
authors: K
authors: K
authors: Schmiegelow
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D003625:Data Collection; D006801:Humans; D006967:Hypersensitivity / Q000150:complications* / Q000453:epidemiology; D016017:Odds Ratio; D054198:Precursor Cell Lymphoblastic Leukemia-Lymphoma / Q000453:epidemiology / Q000209:etiology*; D012306:Risk