1. Non-smoking: a feature of ulcerative colitis;AD, I.Harries; A, Baird; J, Rhodes;Br Med J,1982
2. Non-smoking: a feature of ulcerative colitis;Br MedJ,1982
3. Cigarette smoking and ulcerative colitis;Jick, H.; Walker, A.M.;N Englj Med,1983
4. Gastroenterol,1984
5. Smoking and ulcerative colitis;Logan, R.F.A.; Edmond, M.; Somerville, K.W.; Langman, M.J.S.;BrMed J,1984