1. Department for Internal Medicine, Center for Diabetes and Metabolism, m&i-Fachklinik Bad Heilbrunn, Woernerweg 30, D-83670 Bad Heilbrunn, Germany.
2. Leicester Diabetes Centre, University of Leicester, Leicester, UK.
3. Cathedra of Family Medicine, Clinical Medicine Department, University Miguel Hernandez, San Juan de Alicante, Spain.
4. McGill Nutrition Centre, Royal Victoria Hospital, McGill University, Montreal, Quebec, Canada.