Reply to: Functional criteria to define progressive pulmonary fibrosis: Searching for the Holy Grail

Am J Respir Crit Care Med. 2022 Sep 29. doi: 10.1164/rccm.202209-1807LE. Online ahead of print.
No abstract available

Keywords: Idiopathic Interstitial Pneumonia; Idiopathic Pulmonary Fibrosis; Interstitial Lung Disease; Progressive Fibrosing Interstitial Lung Disease; Progressive Pulmonary Fibrosis.