Aso, S., Matsui, H., Fushimi, K., & Yasunaga, H. (2019). Systemic glucocorticoids plus cyclophosphamide for acute exacerbation of idiopathic pulmonary fibrosis: a retrospective nationwide study. Sarcoidosis Vasculitis and Diffuse Lung Disease, 36(2), 116-123. https://doi.org/10.36141/svdld.v36i2.7181