1. Molecular and Clinical Sciences Research Institute, St George’s, University of London , Cranmer Terrace , London SW17 0RE, UK
2. Dept. Int. Med. II, Division of Cardiology, Medical University of Vienna , Waehringer Guertel 18-20 , AT-1090 Vienna, Austria
3. Institute of Pharmacology, West German Heart and Vascular Centre, University Duisburg-Essen , Hufelandstrasse 55 , DE-45122 Essen, Germany
4. Department of Medicine, Montreal Heart Institute and Université de Montréal , Montréal , Canada
5. Department of Molecular Physiology & Biophysics, Baylor College of Medicine , Houston, TX , USA
6. Section of Pharmacology, Catholic University School of Medicine , Largo F. Vito 1 , 00168 Rome, Italy