- Correspondence to: L Schwartz Arnold Johnson Chair in Health Care Ethics, McMaster University, Department of Clinical Epidemiology and Biostatistics, HSC 3V43, 1200 Main Street West, Hamilton, Ontario, Canada, L8N 3Z5;
- Accepted 2 December 2002
- Published in print 1 December 2003.
- Published online 8 December 2003.
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