RT Journal Article SR Electronic T1 The prevalence and burden of interstitial lung diseases in the USA JF ERJ Open Research JO erjor FD European Respiratory Society SP 00630-2021 DO 10.1183/23120541.00630-2021 VO 8 IS 1 A1 Niranjan Jeganathan A1 Matheni Sathananthan YR 2022 UL http://openres.ersjournals.com/content/8/1/00630-2021.abstract AB