RT Journal Article SR Electronic T1 Passive smoking and an increased risk of acute stroke JF Tobacco Control JO Tob Control FD BMJ Publishing Group Ltd SP 112 OP 113 DO 10.1136/tc.9.1.112 VO 9 IS 1 A1 KENNETH WE DENSON YR 2000 UL http://tobaccocontrol.bmj.com/content/9/1/112.abstract AB