RT Journal Article SR Electronic T1 Randomised controlled trial using social support and financial incentives for high risk pregnant smokers: Significant Other Supporter (SOS) program JF Tobacco Control JO Tob Control FD BMJ Publishing Group Ltd SP iii67 OP iii69 DO 10.1136/tc.9.suppl_3.iii67 VO 9 IS suppl 3 A1 Rebecca J Donatelle A1 Susan L Prows A1 Donna Champeau A1 Deanne Hudson YR 2000 UL http://tobaccocontrol.bmj.com/content/9/suppl_3/iii67.abstract AB