1. Oxford Cardiovascular Clinical Research Facility, University of Oxford, Oxford OX3 9DU, U.K.
2. Department of Clinical and Laboratory Immunology, Oxford University Hospitals NHS Trust, Oxford OX3 7LE, U.K.
3. Academic Medical Centre, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
4. Department of Pulmonology, University Hospital of Zurich, and University of Zurich, 8091 Zurich, Switzerland
5. Division of Cardiology, Charité–Universitätsmedizin Berlin, Campus Benjamin Franklin, 10117 Berlin, Germany