title: Six thousand lessons 'learned the hard way'.
authors.forename: Tom
authors.initials: T
authors.lastname: Makin
mesh_terms: D006779:Hospitals, Public; D011552:Pseudomonas Infections / Q000517:prevention & control; D011550:Pseudomonas aeruginosa / Q000302:isolation & purification / Q000472:pathogenicity; D013222:State Medicine; D014871:Water Microbiology; D014881:Water Supply