Affiliation: | 1. Department of Pulmonary Medicine, Franciscus Gasthuis & Vlietland, Rotterdam, The Netherlands;2. Department of Pulmonary Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands;3. Department of Pulmonary Medicine, Maasstad hospital, Rotterdam, The Netherlands;4. Department of Scientific Education, Franciscus Gasthuis & Vlietland, Rotterdam, The Netherlands |