Current Concepts

From the Respiratory Division, Department of Medicine, University of British Columbia, Vancouver (M.C.-Y.); and the Department of Chest Medicine, Sacre-Coeur Hospital, Universite de Montreal, Montreal (M.C.-Y., J.-L.M.) -- both in Canada. Address reprint requests to Dr. Chan-Yeung at the Dept. of Medicine, Vancouver General Hospital, 2775 Heather St., Vancouver, BC V5Z 3J5, Canada.

Supported by the Respiratory Health Network of Centres of Excellence of Canada, the Medical Research Council of Canada, the British Columbia Lung Association, the Workers' Compensation Board of British Columbia, the Centre Quebecois d'Excellence en Sante Respiratoire, the Institut de Recherche en Sante et Securite du Travail, and the Commission de la Sante et Securite du Travail du Quebec. Dr. Malo is a scholar with the Fonds de la Recherche en Sante du Quebec.