Connie Pechmann, a professor of marketing, is an expert on e-cigarette marketing. She has found that the most effective online marketing disproportionately targets Hispanics.

https://merage.uci.edu/news/2019/01/smokescreen-online-marketing-of-e-cigarettes-targets-minority-groups.html

https://merage.uci.edu/research-faculty/faculty-directory/Connie-Pechmann.html