Acute exacerbations of fibrotic hypersensitivity pneumonitis: a case series.
Olson AL, Huie TJ, Groshong SD, Cosgrove GP, Janssen WJ, Schwarz MI, Brown KK, Frankel SK. Acute exacerbations of fibrotic hypersensitivity pneumonitis: a case series. Chest. 2008 Oct; 134(4):844-850.