- Correspondence to: Dr S M Tarlo, The Gage Occupational and Environmental Health Unit, 223 College St, Toronto, Ontario M5T 2S8, Canada;
- Accepted July 27, 2001
- First published January 1, 2002.
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.