Fig. 1
Flow chart of patient selection. *Idiopathic nonspecific interstitial pneumonia, respiratory bronchiolitis-associated interstitial lung disease, cryptogenic organizing pneumonia, acute interstitial pneumonia, desquamative interstitial pneumonia, lymphoid interstitial pneumonia, idiopathic pleuroparenchymal fibroelastosis and unclassifiable idiopathic interstitial pneumonia. IP interstitial pneumonia, CT computed tomography, IPF idiopathic pulmonary fibrosis, mPSL methylprednisolone, rTM recombinant human soluble thrombomodulin