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Competing interests SPP has received grants from NHLBI (AsthmaNet, SARP, SPIROMICS), the American Lung Association (Asthma Clinical Research Centers) and is an Advisor to DCC. He serves as a consultant to AstraZeneca, Aerocrine, Airsonett AB, GlaxoSmithKline, Merck, Targacept and TEVA and has provided lectures for Merck and Integrity CE.
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