1. Section of Patient Centred Outcomes Research, Leeds Institute for Medical Research at St James’s, University of Leeds, Leeds, UK
2. Department of Thoracic Surgery, James Cook University Hospital, Middlesbrough, UK
3. Department of Thoracic Surgery, San Giovanni Hospital, Bellinzona, Switzerland
4. Department of Thoracic Surgery, Leeds Teaching Hospital NHS Trust, Leeds, UK
5. Department of Thoracic Surgery, San Gerardo Hospital, Monza, Italy
6. Department of Thoracic Surgery, Salamanca University Hospital, Salamanca, Spain
7. Department of Thoracic Surgery, Sheffield Teaching Hospital NHS Trust, Sheffield, UK
8. University Hospital of Regensburg, Centre for Clinical Studies Regensburg, Germany
9. Department of Thoracic Surgery, St. Joseph's Healthcare, McMaster University, Hamilton, Ontario, Canada
10. Department of Thoracic Surgery, San Paolo Hospital, Milan, Italy