1. Department of Pulmonary Medicine, Canisius-Wilhelmina Hospital, Nijmegen, The Netherlands
2. Department of Respiratory Medicine, Maastricht University Medical Centre, Maastricht, The Netherlands
3. Department of Pathology, Erasmus Medical Centre, Rotterdam, The Netherlands
4. Department of Pulmonology, ILD Centre of Excellence, Nieuwegein, The Netherlands
5. Van Creveldkliniek, University Medical Centre Utrecht, Utrecht, The Netherlands