1. Cardiovascular Medicine Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
2. Thrombosis Research Group, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
3. Yale New Haven Hospital/Yale Center for Outcomes Research and Evaluation, New Haven, Connecticut
4. Clinical Biostatistics Unit, Hospital Ramón y Cajal and Universidad de Alcalá, Centro de Investigación Biomédica en Red de Enfermedades Respiratorias, Madrid, Spain
5. Respiratory Department, Hospital Ramón y Cajal, Madrid, Spain
6. Division of Nuclear Medicine, Department of Radiology, Montefiore Medical Center and the Albert Einstein College of Medicine, The Bronx, New York
7. Respiratory Department, Hospital Galdakao, Galdakao, Spain
8. Section of Clinical Biochemistry and School of Medicine, University of Verona, Verona, Italy
9. Division of Pulmonary and Critical Care Medicine, Washington University School of Medicine in St Louis, St Louis, Missouri
10. Respiratory Department, Hospital Virgen del Rocío, Sevilla, Spain
11. Biomedical Research Networking Center Enfermedades Respiratorias, Madrid, Spain
12. Medicine Department, Universidad de Alcalá, Madrid, Spain