RT Journal Article SR Electronic T1 Environmental Tobacco Smoke and Mortality JF Journal of Epidemiology and Community Health JO J Epidemiol Community Health FD BMJ Publishing Group Ltd SP 163 OP 163 DO 10.1136/jech.47.2.163-a VO 47 IS 2 A1 Strachan, David YR 1993 UL http://jech.bmj.com/content/47/2/163.2.abstract AB