Frontiers Direct health implications of e cigarette use: a systematic scoping review with evidence assessment Health impact of E cigarettes: a prospective 3.5 year study of regular daily users who have never smoked Scientific Reports PDF) Trying to clear the air: e cigarette use and periodontal disease Effect of unguided e cigarette provision on uptake, use, and smoking cessation among adults who smoke in the USA: a naturalistic, randomised, controlled clinical trial eClinicalMedicine Electronic cigarettes and cardiovascular disease: epidemiological and biological links Pflgers Archiv European Journal of Physiology Springer Nature Link Frontiers E Cigarette Use Among Adolescents: An Overview of the Literature and Future Perspectives