1. Mortality and coronary heart disease among men studied for twenty-eight years;Keys;Arch. Intern. Med.,1971
2. Regional differences in prevalence, incidence and mortality from atherosclerotic coronary heart disease;Stamler,1970
3. Cigar and pipe smoking in relation to lung cancer and excess mortality;Gsell;J. Natl. Cancer Inst.,1972
4. Controlled measurement of smoking particle retention in the respiratory tract;Mitchell;Am. J. Resp. Dis,1962