title: Current opinion in gastroenterology.
authors.forename: W Allan
authors.initials: WA
authors.lastname: Walker
mesh_terms: D041981:Gastrointestinal Tract / Q000276:immunology* / Q000382:microbiology; D006801:Humans; D061148:Hygiene Hypothesis; D008019:Life Style / Q000208:ethnology; D044342:Malnutrition / Q000208:ethnology / Q000276:immunology*; D054892:Metagenome / Q000276:immunology*