Vaper Trails pt 2 Prof. Chapman (369)
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Vapes are 21st century inventions but the science of smoking and its dangers are well known. Prof. Chapman tells Dr Karl how Vapes are likely to be worse than tobacco, why "Puff Parameters" lead to such conclusions, and how lung cancer became a top killer. Dr Karl.com simonchapman6.com
Vaper Trails pt 2 Prof. Chapman (369)