- Correspondence to Nicole Vellios, Economics of Tobacco Control Project, School of Economics, University of Cape Town, Cape Town, South Africa;
- Received October 17, 2018
- Revised January 25, 2019
- Accepted January 28, 2019
- First published August 5, 2019.
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.