- Correspondence to Matthew Neidell, Department of Health Policy and Management, Columbia University, 600 W. 168th Street, 6th Floor, New York, NY 10032, USA;
- Accepted September 7, 2009
- First published October 12, 2009.
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.