- Correspondence to Dr Stefan Baral, Center for Public Health and Human Rights, Department of Epidemiology, Johns Hopkins School of Public Health, E7146, 615 N Wolfe Street, Baltimore, MD 21205, USA;
- Accepted 9 February 2010
- Published online 26 July 2010.
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.