1. Department of Cardiology; Karolinska University Hospital; 171 76 Stockholm Sweden
2. Department of Endocrinology; Medical University; Graz Austria
3. Unitá Operativa di Cardiologia Clinica; Istituto Clinico Humanitas; Milan Italy
4. Divisione di Cardiologia; IRCCS Policlinico S Matteo; Pavia Italy
5. Department of Cardiology; Charité Hospital; Berlin Germany
6. Department of Internal Medicine III; University of Cologne; Germany