E-cigarettes and Smoking Cessation in the United States According to Frequency of E-cigarette Use and Quitting DurationFebruary 12, 2020February 12, 2020https://academic.oup.com/ntr/advance-article-abstract/doi/10.1093/ntr/ntz025/5320447Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Name * Email * Website Comment * Save my name, email, and website in this browser for the next time I comment. ΔThis site uses Akismet to reduce spam. Learn how your comment data is processed.