ASO, S.; MATSUI, H.; FUSHIMI, K.; YASUNAGA, H. Systemic glucocorticoids plus cyclophosphamide for acute exacerbation of idiopathic pulmonary fibrosis: a retrospective nationwide study. Sarcoidosis Vasculitis and Diffuse Lung Disease, v. 36, n. 2, p. 116-123, 6 Jun. 2019.