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. 2022 Jun 16;9(1):e001202. doi: 10.1136/bmjresp-2022-001202

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© Author(s) (or their employer(s)) 2022. Re-use permitted under CC BY. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution 4.0 Unported (CC BY 4.0) license, which permits others to copy, redistribute, remix, transform and build upon this work for any purpose, provided the original work is properly cited, a link to the licence is given, and indication of whether changes were made. See: https://creativecommons.org/licenses/by/4.0/.

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Flow diagram of radiographic progression of UIP within the IPF cohort (n=230). *Clinical diagnosis as per 2011 IPF guideline¹³ and as per 2018 IPF guideline.¹⁴ ATLS, Latin American Thoracic Society; ATS, American Thoracic Society; ERS, European Respiratory Society; IPF, Idiopathic pulmonary fibrosis; JRS, Japanese Respiratory Society; UIP, usual interstitial pneumonia.