University of Groningen - University Medical Center Groningen (UMCG), Albert Schweitzer Hospital, Erasmus University Rotterdam (EUR) - Clinical Trial Center, University of Groningen - University Medical Center Groningen (UMCG), Medical Center Leeuwarden, Medisch Spectrum Twente, University of Groningen - University Medical Center Groningen (UMCG), University of Groningen - Groningen Research Institute for Asthma and COPD, Meander Medical Center, Tjongerschans, Antonius Zorggroep - Antonius Hospital Sneek, Deventer Ziekenhuis - Deventer Hospital, Maastricht University - Medical Center, Medical Center Leeuwarden, University of Groningen - Department of Hematology and Oncology, Independent, University of Groningen - Department of Pulmonary Diseases, Erasmus University Rotterdam (EUR) - Department of Hematology, Albert Schweitzer Hospital, University of Groningen - University Medical Center Groningen (UMCG), University of Groningen - Department of Epidemiology, Albert Schweitzer Hospital, Medical Center Leeuwarden, University of Groningen - University Medical Center Groningen (UMCG), University of Groningen - University Medical Center Groningen (UMCG), University of Groningen - University Medical Center Groningen (UMCG), University of Groningen - University Medical Center Groningen (UMCG), University of Groningen - University Medical Center Groningen (UMCG) and University of Groningen - Department of Hematology and Oncology

University of Groningen - Department of Pulmonary Diseases, University of Twente - Department of Medical Cell BioPhysics, University of Groningen - European Research Institute for the Biology of Ageing (ERIBA), University of Groningen - Department of Pulmonary Diseases, University of Twente - Department of Medical Cell BioPhysics, University of Groningen - European Research Institute for the Biology of Ageing (ERIBA), University of Groningen - European Research Institute for the Biology of Ageing (ERIBA), University of Groningen - Department of Pathology and Medical Biology, University of Groningen - Department of Pathology and Medical Biology, University of Twente - Department of Medical Cell BioPhysics and University of Groningen - Department of Pulmonary Diseases