- Correspondence to Professor Frank J Chaloupka, Department of Economics, Institute for Health Research and Policy, University of Illinois at Chicago, Chicago, IL 60608, USA;
- Received October 1, 2014
- Accepted November 28, 2014
- First published December 30, 2014.
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.