1. Ludwig Boltzmann Institute of Metabolic Diseases and Nutrition, Vienna, Austria
2. Department of Medical Genetics, Division of Genetic Epidemiology, Molecular and Clinical Pharmacology, Innsbruck Medical University, Innsbruck, Austria
3. 3rd Medical Department of Metabolic Diseases and Nephrology, Lainz Hospital, Vienna, Austria
4. Department of Internal Medicine 3, Division of Endocrinology and Metabolism, Medical University Vienna, Vienna, Austria
5. Metabolic Unit, Institute of Biomedical Engineering, Padova, Italy
6. Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University Vienna, Vienna, Austria