1 Interstitial Lung Diseases Center of Excellence, Dept of Pulmonology, St Antonius Hospital, Nieuwegein, The Netherlands.
2 These authors contributed equally to the work.
3 Dept of Medical Physics, St. Antonius Hospital, Nieuwegein, The Netherlands.
4 Interstitial Lung Diseases Center of Excellence, Dept of Pulmonology, St Antonius Hospital, Nieuwegein, The Netherlands a.vorselaars@antoniusziekenhuis.nl.
5 Division of Heart and Lungs, Utrecht University Medical Centre, Utrecht, The Netherlands.