Aso, S., Matsui, H., Fushimi, K. and 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), pp. 116-123. Available at: http://mattioli1885journals.com/index.php/sarcoidosis/article/view/7181 (Accessed: 15September2019).