Since different materials have different transparency properties, the intensity of an x-ray image depends on both the thickness and the type of material between the source and the receptor
Best For: Heavy users who prioritise battery life and satisfaction above maximum portability
Several international guidelines (from the National Institute for Health and Care Excellence, the New Zealand Ministry of Health, the Royal Australian College of General Practitioners, and the Haute Authorit de Sant de France) advise that e-cigarettes may be used for cessation in certain cases but that information should be provided on the risks and uncertainties, including that e-cigarettes are not licensed medicines in most jurisdictions, and that there is a lack of evidence on long-term harms.95 , 97 99 The Australian and French guidelines suggest that other therapies should be considered first.97 , 99 The United States Preventive Services Task Force judged that the evidence on e-cigarettes was insufficient and recommends directing patients to interventions with proven effectiveness and safety.94 Gaps in knowledge Large comparative trials101 will likely refine future recommendations
Archived from the original on April 15, 2019
Tnnesen P, Nrregaard J, Simonsen K, Swe U