title: [Recurrent indeterminate abdominal pain in schoolchildren in Helsinki at a conventional school and at the Waldorf school].
mesh_terms: D000005:Abdomen; D000367:Age Factors; D002648:Child; D005260:Female; D005387:Finland; D006801:Humans; D008297:Male; D010146:Pain / Q000453:epidemiology*; D002666:Psychology, Child; D012008:Recurrence; D012737:Sex Factors; D013548:Sweden / Q000208:ethnology
vernacular_title: Wiederkehrende unbestimmte Bauchschmerzen bei den Schülern in Helsinki in einer konventionellen Schule und in der Waldorf-Schule.