David Sweanor is adjunct professor of law at the University of Ottawa, Canada.
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He spent much of his working life in the front lines of the fight against smoking. He has been involved in development of world-leading tobacco control initiatives in Canada since the 1980s and is a globally recognized expert on tobacco and public health issues.
He thinks e-cigarettes could be one of the biggest breakthroughs ever in public health — an unfashionable view in many anti-smoking circles.