1. National Heart and Lung Institute, Imperial College London, United Kingdom (R.A-L., J.H., M.S.-S., D.T., S.S., S.N., R.P., I.M., C.C., Y.A., G.C., R.W., J.M., S.A.T., D.P.F.).
2. Imperial College Healthcare NHS Trust, London, United Kingdom (R.A.-L., J.H., M.S.-S., S.S., SN., R.P., I.M.,K C.C., Y.A., C.B., G.C., G.K., J.M., J.E.D., D.P.F.).
3. Cancer Research UK and UCL Cancer Trials Centre, University College London (H.-M.D.).
4. Essex Cardiothoracic Centre, Basildon, United Kingdom (J.D., T.K., K.T.).
5. Anglia Ruskin University, Chelmsford, United Kingdom (J.D., T.K.).
6. Royal Devon and Exeter NHS Trust, United Kingdom (A.S.P.S.).
7. East Sussex Healthcare NHS Trust, Hastings, United Kingdom (R.G.).
8. Royal Bournemouth and Christchurch NHS Trust, United Kingdom (S.T.).
9. West Hertfordshire Hospitals NHS Trust, Watford, United Kingdom (N.G.K.).
10. Vanderbilt University School of Medicine, Department of Biostatistics, Nashville, TN (F.E.H.).