- Correspondence to Dr Ali Rowhani-Rahbar, Department of Epidemiology, University of Washington, Box 357236, Seattle, WA 98195, USA;
- Received February 3, 2017
- Revised May 4, 2017
- Accepted May 5, 2017
- First published July 11, 2017.
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.