“…12,13,40,48,52,55,56, Of these, 19 were from cross-sectional surveys on the effect of e-cigarette advertisement and marketing exposure on intention to use, or perceptions of e-cigarettes, or use of e-cigarettes, 12,13,40,48,55,56,61,64,68,69,72,74,76,77,[79][80][81]83 five were from randomized trials on the effect of e-cigarette advertisement exposure on attitudes and use of e-cigarettes, 62,63,65,66,73 five were from between-subjects experimental studies on the effect of e-cigarette advertisement exposure on intention to use e-cigarettes, 52,59,60,67,73 one was from a factorial within-subjects quasi-experimental study of e-cigarette and snus advertising message framing, 78 one was from a longitudinal analysis of sales data to measure e-cigarette demand, 70 and two were experimental auctions to assess the impact of advertisements demand for and willingness to pay for e-cigarettes. 71,75 The specific measures used to assess e-cigarette perceptions and use are listed in Table 2.…”