- Correspondence to: T M Wilkinson School of Population Health, University of Auckland, Private Bag 92019, Auckland, New Zealand;
- Received June 2, 2004
- Accepted December 4, 2004
- Revised September 23, 2004
- First published September 30, 2005.
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.