- Correspondence to Professor David M Studdert, Melbourne School of Population Health, Parkville, Victoria 3052, Australia;
- Accepted 23 June 2012
- Published online 20 November 2012.
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.