title: Letters to the editor.
authors.affiliation: Faculty of Occupational Medicine, London, UK.
authors.forename: Ian
authors.initials: I
authors.lastname: Aston
authors.affiliation: BP, London, UK President, Faculty of Occupational Medicine, London, UK.
authors.forename: Richard
authors.initials: R
authors.lastname: Heron
mesh_terms: D003695:Delivery of Health Care / Q000592:standards*; D006801:Humans; D009313:National Health Programs; D016272:Occupational Health; D010820:Physicians / Q000458:organization & administration*