1. Smoking and health now;of Physicians, Royal College,1971
2. Mortality from tobacco in developed countries: indirect estimation from national vital statistics;Peto, R.; Lopez, A.D.; Boreham, J.; Thun, M.; Heath, C.;Lancet,1992
3. Treatment for the cigarette smoker;Jarvis, M.J.; Russell, M.A.H.;Intenational Review ofPsychiaoy,1989
4. Meta-analysis of randomized controlled trials ofnicotine chewing gum;Lam, W.; Sze, P.C.; Sachs, H.S.; Chalmers, T.C.;Lancet,1987
5. Transdermal nicotine: a review;Palmer, K.J.; Buckley, M.M.; Foulds, D.;Drugs,1992