- Correspondence to: John Concato
Clinical Epidemiology Research Program, VA Connecticut Healthcare System, 950 Campbell Avenue, CERC 151B, West Haven, CT 06516, USA;
- First published August 23, 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.