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. 2023 Nov 17;12:e44802. doi: 10.2196/44802

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©Patrycja Rzepka-Wrona, Szymon Skoczyński, Wojciech J Piotrowski, Ewa Jassem, Dariusz Ziora, Adam Barczyk. Originally published in JMIR Research Protocols (https://www.researchprotocols.org), 17.11.2023.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in JMIR Research Protocols, is properly cited. The complete bibliographic information, a link to the original publication on https://www.researchprotocols.org, as well as this copyright and license information must be included.

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Flowchart of the study design. CTD-ILD: connective tissue disease–associated interstitial lung disease; IIP: idiopathic interstitial pneumonia; IPAF: interstitial pneumonia with autoimmune features; V: visit.