RT Journal Article SR Electronic T1 Tobacco industry documents: treasure trove or quagmire? JF Tobacco Control JO Tob Control FD BMJ Publishing Group Ltd SP 334 OP 338 DO 10.1136/tc.9.3.334 VO 9 IS 3 A1 Malone, Ruth E A1 Balbach, Edith D YR 2000 UL http://tobaccocontrol.bmj.com/content/9/3/334.abstract AB