1. Cardiology Department, Centre for Heart Diseases Military Hospital Wroclaw Poland
2. Department of Heart Diseases Wroclaw Medical University Wroclaw Poland
3. Singulex, Inc. Alameda CA USA
4. Momentum Research Durham NC USA
5. National Heart and Lung Institute, Imperial College London (Royal Brompton & Harefield Hospitals), London, UK, and Robertson Centre for Biostatistics & Clinical Trials Institute of Health & Wellbeing, University of Glasgow Glasgow UK