1. Department of Medicine Mount Auburn Hospital Cambridge Massachusetts USA
2. Harvard Medical School Boston Massachusetts USA
3. Department of Surgery and Cancer Imperial College London London UK
4. Medical Data Research Collaborative London UK
5. Department of Respiratory Medicine Imperial College Healthcare NHS Trust London UK
6. National Heart and Lung Institute, Imperial College London London UK
7. Pulmonary and Critical Care Medicine, Brigham and Women's Hospital Boston Massachusetts USA
8. Division of Rheumatology, Allergy and Immunology, Department of Medicine Massachusetts General Hospital Boston Massachusetts USA