title: [Closing water circulation paths?].
authors.affiliation: Technische Universität Hamburg-Harburg.
authors.forename: K
authors.initials: K
authors.lastname: Wichmann
mesh_terms: D005858:Germany; D006801:Humans; D014871:Water Microbiology; D014877:Water Pollution, Chemical / Q000517:prevention & control*; D018508:Water Purification; D014881:Water Supply / Q000592:standards