1. Department of Pulmonary Diseases and
2. Thirona, Nijmegen, The Netherlands;
3. Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands;
4. Department of Radiology and Nuclear Medicine and
5. GROW School for Oncology and Reproduction, Maastricht, The Netherlands;
6. Department of Pulmonology, Maastricht University Medical Center+, Maastricht, The Netherlands;
7. NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht, The Netherlands;
8. Department of Respiratory Medicine and Allergology, COPD Center, Sahlgrenska University Hospital, Gothenburg, Sweden; and
9. Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden