1. Division of Endocrinology and Metabolism, Medical University of Graz, Graz, Austria.
2. BBraun, Melsungen, Germany.
3. Institute of Metabolic Science, University of Cambridge, Cambridge, United Kingdom.
4. Department of Internal Medicine, Medical University of Graz, Graz, Austria.
5. Joanneum Research Forschungsgesellschaft mbH, Graz, Austria.