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General Comment:as a former smoker of 28 years, I ask that the comment period be extended 180 days. I had attempted to quit smoking over the last 10 years. Never successfully, until I tried an e-cig. Now tobacco free over a year, the regained vitality and overall improvement in my health is both obvious and invigorating. The boon to society as a smoke cessation product should be more thoroughly examined.
