1 Oxford Pleural Unit, Oxford Centre for Respiratory Medicine, Churchill Hospital, Oxford, England; National Institute for Health Research Biomedical Research Centre, Oxford, University of Oxford, Oxford, England. Electronic address: [email protected].
2 Department of Respiratory Medicine, University Hospitals Bristol National Health Service Foundation Trust, Bristol, England.
3 Department of Respiratory Medicine, Worcestershire Royal Hospital, Worcestershire, England.
4 Oxford Pleural Unit, Oxford Centre for Respiratory Medicine, Churchill Hospital, Oxford, England; National Institute for Health Research Biomedical Research Centre, Oxford, University of Oxford, Oxford, England; Department of Thoracic Radiology, Churchill Hospital, Bristol, England.
5 Oxford Pleural Unit, Oxford Centre for Respiratory Medicine, Churchill Hospital, Oxford, England; National Institute for Health Research Biomedical Research Centre, Oxford, University of Oxford, Oxford, England.
6 Academic Respiratory Unit, Department of Clinical Sciences, University of Bristol, Bristol, England; North Bristol National Health Service Trust Lung Centre, Southmead Hospital, University of Bristol, Bristol, England.