title: [Chronic diarrhea: what is the cause?].
authors.affiliation: .
authors.forename: Peter
authors.initials: P
authors.lastname: Stiefelhagen
mesh_terms: D000328:Adult; D002908:Chronic Disease; D003937:Diagnosis, Differential; D003967:Diarrhea / Q000209:etiology*; D058006:General Practice; D006801:Humans