An International Patient-led Registry in Fibrotic Interstitial Lung Diseases Using eHealth Technology

"* Patients will perform daily home spirometry for three months with a Bluetooth-enabled validated, CE-marked home spirometer (Spiro bank Smart, MIR, Italy). Subsequently, patients will perform weekly home spirometry for two years in total. During this period, patients will be asked to perform three measurements each week on the same day.~* Hospital-based spirometry will be performed according to international guidelines.~* Patients will complete patient-reported outcomes (PROMs) online in the secured application every six months."