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Relationship between radiological features and bronchoalveolar lavage (BAL) bacterial burden. No difference in bacterial burden log10 (16S rRNA gene copies·mL−1 of BAL) based on (a) a definite or probable pattern of usual interstitial pneumonia (UIP), (b) the presence or absence of radiological pleuroparenchymal fibroelastosis (PPFE) or (c) the presence or absence of honeycombing. Statistical significance tested with Mann–Whitney test.
