Gabriel Scally, regional director of public health (gscally@doh.gov.uk) a, Liam J Donaldson, regional director, NHS Executive (Northern and Yorkshire). b; a NHS Executive (South and West), Westwood House, Lime Kiln Close, Stoke Gifford, Bristol BS34 8SR; b John Snow House, Durham University Science Park, Durham DH1 3YG; Correspondence to: Dr Scally

