- Correspondence to Dr Evan Blecher, International Tobacco Control Research Program, American Cancer Society, 250 Williams Street NW, Atlanta, GA 30303, USA;
- Accepted May 22, 2013
- First published June 21, 2013.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.