1. Department of Medicine and Aging Sciences; G. d'Annunzio University; Chieti Italy
2. Aging and Translational Medicine Research Center, CeSI-Met; G. d'Annunzio' University; Chieti Italy
3. Clinical Metabolic Physiology, Steno Diabetes Center Copenhagen, Gentofte Hospital; University of Copenhagen; Hellerup Denmark
4. Department of Clinical Medicine; Faculty of Health and Medical Sciences, University of Copenhagen; Copenhagen Denmark
5. Novo Nordisk Foundation Center for Basic Metabolic Research; Faculty of Health and Medical Sciences, University of Copenhagen; Copenhagen Denmark