Best estimates of coronary risk of passive smoking are neededBMJ 2004; 329 doi: https://doi.org/10.1136/bmj.329.7471.918-b (Published 14 October 2004) Cite this as: BMJ 2004;329:918
- Ruoling Chen (Ruoling.Chen@Westminster-pct.nhs.uk), honorary senior lecturer,
- Hugh Tunstall-Pedoe, professor of cardiovascular epidemiology,
- Roger Tavendale, biochemist
- Department of Epidemiology and Public Health, University College London, London WC1E 6BT
- Cardiovascular Epidemiology Unit, Institute of Cardiovascular Research, University of Dundee, Ninewells Hospital, Dundee DD1 9SY
EDITOR—Whincup et al show passive inhalation of environmental tobacco smoke to be an unexpectedly strong risk factor for coronary heart disease, when assessed using serum cotinine concentrations, in contrast to Enstrom and Kabat, who did not.1 2 They emphasise the need for further prospective studies using biomarkers.
We measured serum cotinine concentration and other biomarkers of smoking at …