1. Trinity Biomedical Science Institute (TBSI), Dublin, Ireland
2. Sanofi-aventis, Bridgewater, NJ, USA
3. Department of Pathology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
4. Department of Medicine, Division of Cardiovascular Disease, Section of Vascular Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA