1. Contribution of alpha- and beta-defensins to lung function decline and infection in smokers: an association study Wallace, Alison; He, Jian-Qing; Burkett, Kelly; Ruan, Jian; Connett, John; Anthonisen, Nicholas; Paré, Peter; Sandford, Andrew 2006 Articles Genetic polymorphismsLungs--Diseases, ObstructiveBiologyEpidemiology