%0 Journal Article %T Forced expirations against a variable resistance: A new chest physiotherapy method in cystic fibrosis %A Oberwaldner, Beatrice %A Evans, Johannes C. %A Zach, Maximilian S. %J Pediatric Pulmonology %V 2 %N 6 %P 358-367 %@ 8755-6863 %D 1986-11-01 %I Wiley Subscription Services, Inc., A Wiley Company %~ DeepDyve