1. Department of Clinical and Experimental Medicine, University of Surrey, Guildford, United Kingdom & Surrey and Sussex Healthcare NHS Trust, Redhill, United Kingdom
2. Clinic of Cardiology and Angiology, National Cardiovascular Institute, Bratislava, Slovakia
3. Institute of Cardiovascular Research, University of Dundee, Ninewells Hospital and Medical School, Dundee, United Kingdom
4. Division of Angiology, Department of Internal Medicine, Medical University, Graz, Austria
5. Division of Angiology, Heart and Vessel Department, Lausanne University Hospital, Lausanne, Switzerland