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Respiratory effects of lowering tar and nicotine levels of cigarettes smoked by young male middle tar smokers. II. Results of a randomised controlled trial.
Withey CH, Papacosta AO, Swan AV, Fitzsimons BA, Ellard GA, Burney PG, Colley JR, Holland WW. Withey CH, et al. Among authors: fitzsimons ba. J Epidemiol Community Health. 1992 Jun;46(3):281-5. doi: 10.1136/jech.46.3.281. J Epidemiol Community Health. 1992. PMID: 1645087 Free PMC article. Clinical Trial.