J Natl Cancer Inst 92:333337 Boffetta P, Pershagen G, Jockel KH, Forastiere F, Gaborieau V, Heinrich J, Jahn I, Kreuzer M, Merletti F, Nyberg F, Rosch F, Simonato L (1999) Cigar and pipe smoking and lung cancer risk: a multicenter study from Europe
57 Countries where Vapour products are available 49 Countries where Modern Oral products are available 29 Countries where Heated Products are available Notes: Based on the weight of evidence and assuming a complete switch from cigarette smoking
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even low levels of secondhand smoke can be harmful
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