Aso, Shotaro, Hiroki Matsui, Kiyohide Fushimi, and Hideo Yasunaga. 2019. “Systemic Glucocorticoids Plus Cyclophosphamide for Acute Exacerbation of Idiopathic Pulmonary Fibrosis: A Retrospective Nationwide Study”. Sarcoidosis Vasculitis and Diffuse Lung Disease 36 (2), 116-23. https://doi.org/10.36141/svdld.v36i2.7181.