- Correspondence to Dr Elizabeth H Bradley, Yale School of Public Health, Division of Health Policy and Administration, 60 College Street, New Haven, CT 06520, USA;
- Accepted 25 February 2011
- Published in print 1 January 2011.
- Published online 29 March 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.