1 Department of Palliative Care, Rehabilitation and Integrative Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
2 Cicely Saunders Institute of Palliative Care, Policy & Rehabilitation, King's College London, London, London, UK.
3 Wolfson Palliative Care Research Centre, University of Hull, Hull, UK.
4 Department of Clinical Sciences, Division of Respiratory Medicine & Allergology, Lund University, Lund, Sweden.
5 Department of Palliative Medicine and Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf (CIO ABCD), Faculty of Medicine and University Hospital, University of Cologne, Cologne, Germany.
6 Pulmonary Medicine, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy.
7 Cicely Saunders Institute of Palliative Care, Policy & Rehabilitation, King's College London, London, London, UK; Cambridge Breathlessness Intervention Service, Cambridge University Hospitals NHS Foundation Trust, University of Cambridge, Cambridge, UK.
8 Oncology-Supportive Care in Cancer Unit, Department Onco-Haematology, Fondazione IRCCS Istituto Nazionale dei Tumori Milano, Milan, Italy.