Azathioprine combined with prednisone in the treatment of idiopathic pulmonary fibrosis: a prospective double-blind, randomized, placebo-controlled clinical trial.
Am Rev Respir Dis. 1991 Aug;144(2):291-6. doi: 10.1164/ajrccm/144.2.291.
Am Rev Respir Dis. 1991.
PMID: 1859050
Clinical Trial.