- Correspondence to: G Mein, International Centre for Health and Society, Department of Epidemiology and Public Health, Royal Free and University College Medical School, 1–19 Torrington Place, London WC1E 6BT, UK;
- Accepted March 19, 2002
- First published January 1, 2003.
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.