RT Journal Article SR Electronic T1 Saved by the bell: the role of telephone helpline services in the context of mass-media anti-smoking campaigns JF Tobacco Control JO Tob Control FD BMJ Publishing Group Ltd SP 117 OP 119 DO 10.1136/tc.9.2.117 VO 9 IS 2 A1 WAKEFIELD, MELANIE A1 BORLAND, RON YR 2000 UL http://tobaccocontrol.bmj.com/content/9/2/117.abstract AB