RT Journal Article SR Electronic T1 The Tobacco Research Network on Disparities (TReND) JF Journal of Epidemiology and Community Health JO J Epidemiol Community Health FD BMJ Publishing Group Ltd SP ii3 OP ii4 DO 10.1136/jech.2006.052472 VO 60 IS suppl 2 A1 Richard R Clayton YR 2006 UL http://jech.bmj.com/content/60/suppl_2/ii3.abstract AB