1 Oxford Pleural Unit, Churchill Hospital, Oxford, England; NIHR Oxford Biomedical Research Centre, University of Oxford, Oxford, England; Department of Microbiology and Infectious Diseases, John Radcliffe Hospital, Oxford, England. Electronic address: johnwrightson@thorax.org.uk.
2 NIHR Oxford Biomedical Research Centre, University of Oxford, Oxford, England.
3 Oxford Pleural Unit, Churchill Hospital, Oxford, England; NIHR Oxford Biomedical Research Centre, University of Oxford, Oxford, England.
4 Oxford Pleural Unit, Churchill Hospital, Oxford, England; Oxford Centre for Respiratory Medicine, Department of Thoracic Radiology, Oxford, England; NIHR Oxford Biomedical Research Centre, University of Oxford, Oxford, England.
5 North Bristol Lung Centre, Southmead Hospital, Bristol, England; Academic Respiratory Unit, Department of Clinical Sciences, Bristol University, Bristol, England.
6 NIHR Oxford Biomedical Research Centre, University of Oxford, Oxford, England; Department of Microbiology and Infectious Diseases, John Radcliffe Hospital, Oxford, England.
7 Oxford Pleural Unit, Churchill Hospital, Oxford, England; Oxford Respiratory Trials Unit, Churchill Hospital, Oxford, England; NIHR Oxford Biomedical Research Centre, University of Oxford, Oxford, England.