- Correspondence to Dr Nicholas Tarlov, 820 Harrison Ave, FGH 3, Boston University School of Medicine, Boston MA 02118, USA;
- Received December 22, 2010
- Revised March 14, 2011
- Accepted March 20, 2011
- First published July 28, 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.