title: Idiopathic pulmonary fibrosis and nonspecific interstitial pneumonia should stay separate.
authors.forename: H R
authors.initials: HR
authors.lastname: Collard
authors.forename: T E
authors.initials: TE
authors.lastname: King
mesh_terms: D006801:Humans; D017563:Lung Diseases, Interstitial / Q000503:physiopathology*; D011658:Pulmonary Fibrosis / Q000503:physiopathology*