Letter to the editorVariability of sputum inflammatory cells in asthmatic patients receiving corticosteroid therapy: A prospective study using multiple samples
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Disclosure of potential conflict of interest: R. Olivenstein is on the advisory boards for GlaxoSmithKline and AstraZeneca, receives lecture fees from Boehringer-Ingelheim, and receives research support from MedImmune and Novartis. C. Lemière receives research support from the Centers for Disease Control and Prevention and the Quebec Occupational Health and Safety Research Institute (IRSST) and participates on advisory committees for GlaxoSmithKline and AstraZeneca. P. Nair receives research support from Schering-Plough and Ception, Inc. The rest of the authors have declared that they have no conflict of interest.
This study and the Difficult Asthma Program are supported by the Richard and Edith Strauss Canada Foundation. The Meakins-Christie Laboratories and McGill University Health Centre Research Institute are supported in part by a Center grant from Le Fonds de la Recherche en Santé du Québec and the J.T. Costello Memorial Research Fund.