An RCT of a Smartphone-based TID Programme

"For the TID arm, the messages' contents include the tobacco industry's (TI's) anti-smoking campaigns that made smoking more grown-up and more appealing to youth; the TI's role in smoking in movies; etc.~For the sugar sweetened beverage (SSB) arm, the messages' contents include the disease conditions linked to SSBs, and the interference of sugar industry in scientific research."