Poland survey of e-smokers: a demonstrated effect as a harm reduction strategy as demonstrated by reduced cigarette usage in 50.8% of dual users, as well 26.1% showing reduction in nicotine level in their e-liquids over time.April 9, 2020April 9, 2020https://www.ncbi.nlm.nih.gov/pubmed/32258643Leave a Reply Cancel replyYour email address will not be published.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.