Aso, S.; Matsui, H.; Fushimi, K.; Yasunaga, H. Systemic Glucocorticoids Plus Cyclophosphamide for Acute Exacerbation of Idiopathic Pulmonary Fibrosis: A Retrospective Nationwide Study. Sarcoidosis Vasc Diffuse Lung Dis 2019, 36 (2), 116-123. https://doi.org/10.36141/svdld.v36i2.7181.