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ACKNOWLEDGEMENTSWe thank the following individuals and organisations for their help. AEA Technology, National Environmental Technology Centre, Culham, Abingdon, Oxfordshire OX14 3DB for their help with the analysis of United Kingdom air quality data. Professor H R Anderson, St George's Hospital Medical School, London for comments and advice. Published 29 October 1998 Expert Panel on Air Quality Standards Index Air and Environmental Quality Index Defra Home Page |