1. 3rd Medical Department of Metabolic Diseases and Nephrology; Hietzing Hospital; Vienna Austria
2. Karl Landsteiner Institute of Metabolic Diseases and Nephrology; Vienna Austria
3. Department of Endocrinology; William Harvey Research Institute; Barts and the London School of Medicine; Queen Mary University of London; London UK
4. Division of Endocrinology and Metabolism; Department of Internal Medicine III; Medical University Vienna; Vienna Austria
5. Metabolic Unit; Institute of Biomedical Engineering; National Research Council (ISIB-CNR); Padova Italy
6. Division of Nephrology; Department of Internal Medicine III; Medical University Vienna
7. Department of Surgery; Medical University Vienna; Vienna Austria
8. Medical Direction; Specialized Hospital Complex Agathenhof; Micheldorf