1. Institute for Research in Extramural Medicine, VU University Medical Center, Amsterdam, the Netherlands;
2. Department of Clinical Sciences, Lund University, University Hospital, Malmö, Sweden;
3. Metabolic Research Unit, St. James' Hospital, Trinity College, Dublin, Ireland;
4. Unidad de Investigacion, Hospital Universitario La Paz, Madrid, Spain;
5. Division of Therapeutical Teaching for Chronic Diseases, University Hospital, Geneva, Switzerland;
6. Department of Internal Medicine, Catholic University, Rome, Italy.