1. Diabetes Center, 2nd Department of Medicine, Faculty Hospital Kralovske Vinohrady; Charles University 3rd Faculty of Medicine; Prague Czech Republic
2. Dubrava University Hospital; Zagreb Croatia
3. Institut d'Investigacions Biomèdiques August Pi i Sunyer; Centro de Investigación Biomedica en Red de Diabetes y Enfermedades Metabólicas Asociadas; Barcelona Spain
4. Department of Cardiovascular and Metabolic Diseases; IRCCS Multimedica Sesto San Giovanni (MI); Giovanni Italy
5. Department of Internal Medicine; Charles University 2nd Faculty of Medicine; Prague Czech Republic