- Correspondence to Dr Allison E Aiello, Associate Professor of Epidemiology, Department of Epidemiology, Center for Social Epidemiology & Population Health, University of Michigan-School of Public Health, SPH Tower 109 Observatory, Ann Arbor, MI 48109-2029, USA;
- Accepted December 13, 2010
- First published January 10, 2011.
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.