- Correspondence to Dr Bekir Kaplan, Institute for Global Tobacco Control, Johns Hopkins University Bloomberg School of Public Health, 2213 McElderry St 4th Fl, Baltimore, Maryland 21205-2103, USA; ,
- Received January 27, 2017
- Revised May 11, 2017
- Accepted May 28, 2017
- First published June 30, 2017.
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