http://www.sfchronicle.com/bayarea/article /vaping-hailed-as-stop-smoking-aid-despite-6080441.php
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Roberta Keller tried everything she could think of to kick her pack-and-a-half habit of more than 50 years — gum, patches, medication, even an experimental drug through a Stanford University clinical trial — but nothing helped her quit smoking for longer than three months. Then a friend told her about “this vaping thing.”
The rest of the article is by subscription but you can read most of it here: http://i.imgur.com/sG0t7E1.jpg