E-cigarette product characteristics and subsequent frequency of cigarette smoking
Excited to present the research work with @Doctor_BT at #CPDD19 on the effect of e-cigarette use on past 30-day cigarette use among adolescents. Thank you all for dropping by and asking amazing questions. Also, I’d to share my experience of adopting #betterposter by @mikemorrison pic.twitter.com/N4zt7y6Kh9
— Zhi Yang (@zhiiiyang) June 17, 2019