1. Department of Cardiology; Papworth Hospital; Cambridge CB23 3RE UK
2. Department of Cardiology; University of Goettingen; Goettingen Germany
3. Department of Cardiology; Medical University of Graz; Auenbruggerplatz 15 8036 Graz Austria
4. Novartis Pharma AG; Fabrikstrasse 4 CH-4056 Basel Switzerland
5. Medical Department; Novartis Pharmaceuticals UK Ltd; Frimley Business Park Camberley Surrey GU16 7SR UK
6. Division of Medicine and Therapeutics, Ninewells Hospital and Medical School; University of Dundee; Dundee DD1 9SY UK