1. National Heart and Lung Institute Imperial College London London UK
2. Centre de Recherche cardio‐thoracique de Bordeaux Univ‐Bordeaux Pessac France
3. Service des Maladies Respiratoires CHU Bordeaux Pessac France
4. Department of Medicine and Rehabilitation Levanger Hospital, Nord‐Trøndelag Hospital Trust Levanger Norway
5. HUNT Research Centre, Department of Public Health and Nursing, Faculty of Medicine and Health Sciences Norwegian University of Science and Technology (NTNU) Levanger Norway
6. Respiratory Group The George Institute for Global Health Sydney NSW Australia
7. COPD Center, Department of Respiratory Medicine and Allergology Sahlgrenska University Hospital Gothenburg Sweden
8. Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy University of Gothenburg Gothenburg Sweden