title: The importance of being earnest in epidemiology.
authors.affiliation: Department of Paediatrics, Imperial College, London, UK.
authors.forename: Danielle
authors.initials: D
authors.lastname: Belgrave
authors.affiliation: Department of Paediatrics, Imperial College, London, UK.
authors.forename: Adnan
authors.initials: A
authors.lastname: Custovic
mesh_terms: D002648:Child; D004812:Epidemiologic Methods; D006801:Humans; D006967:Hypersensitivity