Nicotine delivery to users from cigarettes and from different types of e cigarettes Psychopharmacology Springer Nature Link Fears vaping generation risk chronic lung disease and shortened life spans as '10,000 puff' devices emerge ABC News How Many Packs of Cigarettes are in a Vape? How Many Cigarettes is an Elux Equivalent? Frontiers Randomized crossover clinical studies to assess abuse liability and nicotine pharmacokinetics of Velo Oral Nicotine pouches Frontiers Direct health implications of e cigarette use: a systematic scoping review with evidence assessment