Article Information
vol. 32 no. 4 1117-1118
PubMed
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History
- Published online September 30, 2008.
Copyright & Usage
© ERS Journals Ltd
Author Information
- S. Suissa
- Division of Clinical Epidemiology, Jewish General Hospital, McGill University Health Centre, and the Depts of Epidemiology, Biostatistics and Medicine, McGill University, Montreal, Canada.