Hi! Are you or someone you know between the ages 1625 currently using electronic vaping devices (nicotine or cannabis vapes)? If so, this is the perfect study for you! We are currently Carboxyhaemoglobin levels, health and lifestyle perceptions in smokers converting from tobacco cigarettes to electronic cigarettes Cognitive confusion: A cross sectional study on the cognitive differences between traditional tobacco and e cigarettes among college students in Zhejiang Province, China Prevalence and characteristics of e cigarette users in Great Britain: Findings from a general population survey of smokers ScienceDirect Questionnaire design *. Download Table