1. Department of Palliative Care, Policy and Rehabilitation, Cicely Saunders Institute, King’s College London, London, UK
2. Physiotherapy, King’s College Hospital NHS Foundation Trust, London, UK
3. Department of Palliative Medicine, Munich University Hospital, LMU Munich, Munich, Germany
4. Department of Respiratory Medicine, King’s College London, London, UK
5. Department of Asthma, Allergy and Respiratory Science, King’s College London, London, UK
6. Centre of Human & Aerospace Physiological Sciences, King’s College London, London, UK