1. Department of Respiratory Medicine and
2. Department of Human Biology, NUTRIM School for Nutrition, Toxicology, and Metabolism, Maastricht University Medical Centre, Maastricht, The Netherlands;
3. Department of Respiratory Medicine, Institute of Tuberculosis and Lung Diseases, Warsaw, Poland;
4. Respiratory Medicine Department, Royal Brompton Hospital, Imperial College, London, UK;
5. Pneumology Department and Research Unit, Cruces Hospital, Basque Country University, Barakaldo, Spain; and
6. Center for Integrated Rehabilitation of Organ Failure (CIRO), Horn, The Netherlands