1. Cardiovascular Research Institute Maastricht (CARIM) and Department of Clinical Chemistry, Central Diagnostic Laboratory, Maastricht University Medical Center , Post office Box 5800, Maastricht 6202 AZ , The Netherlands
2. BHF Centre for Cardiovascular Science, University of Edinburgh , Edinburgh , UK
3. Usher Institute, University of Edinburgh , Edinburgh , United Kingdom
4. Cardiovascular Research Institute Basel (CRIB) and Department of Cardiology, University Hospital Basel, University of Basel , Basel , Switzerland