havent seen anyone mention this study,
first link is a brief
http://diss.kib.ki.se/2007/978-91-7357-372-6/
second is a pdf the whole report
overall still safer than smoking
first link is a brief
http://diss.kib.ki.se/2007/978-91-7357-372-6/
second is a pdf the whole report
overall still safer than smoking
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