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2. Low natural killer-cell activity and immunoglobulin levels associated with smoking in human subjects;Ferson;Int. J. Cancer,1979
3. Effects of age, gender, and cigarette smoking on human immunoregulatory T-cell subsets: Establishment of normal ranges and comparison with patients with colorectal cancer and multiple sclerosis;Burton;Diagn. Immunol.,1983
4. Differential effect of cigarette smoking on recirculating T lymphocyte subsets in pregnant women;Smart;J. Immunol.,1986
5. Lymphocyte subpopulations and lymphocyte reactivity in chronic cigarette smokers;Aizawa;Japan. J. Hyg.,1987