title: [Reevaluation of hygiene theory].
authors.affiliation: Department of Otolaryngology Japanese Red Cross Society, Wakayama Medical Center.
authors.forename: Tadao
authors.initials: T
authors.lastname: Enomoto
mesh_terms: D006801:Humans; D006920:Hygiene; D006967:Hypersensitivity / Q000209:etiology*