R. Okuda, “Newly defined acute exacerbation of idiopathic pulmonary fibrosis with surgically-proven usual interstitial pneumonia: risk factors and outcome”, Sarcoidosis Vasc Diffuse Lung Dis, vol. 36, no. 1, pp. 39–46, Mar. 2019, doi: 10.36141/svdld.v36i1.7117.