Perceptions of harmfulness of heated tobacco and nicotine vaping products compared to cigarettes, and the association of advertising exposure on harm perceptions among adults who s... oleh Michelle R. Goulette, Shannon Gravely, Steve S. Xu, Gang Meng, Anne C.K. Quah, Sungkyu Lee, Sung-il Cho, Yeol Kim, Sujin Lim, Maansi Bansal-Travers, Andrew Hyland, Geoffrey T. Fong, Hong G. Seo