- Dr F Maltais, Centre de Pneumologie, Hôpital Laval, 2725 Chemin Ste-Foy, Ste-Foy, Québec, Canada G1V 4G5 email:
- Received January 19, 2000
- Revision requested March 29, 2000
- Revised May 2, 2000
- Accepted July 6, 2000
- First published October 1, 2000.
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