- Correspondence to Lorraine G Shack, Research and Evaluation Unit, Alberta Health Services, 2210 2nd Street SW, Calgary, Alberta T2S 3C3, Canada;
- Received May 21, 2009
- Accepted October 4, 2009
- First published February 9, 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.