1. Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
2. Center for Medical Research, Clinical Research Center, Medical University of Graz, Graz, Austria
3. Joanneum Research Forschungsgesellschaft mbH HEALTH—Institute for Biomedicine and Health Sciences, Graz, Austria
4. Intensive Care Unit, Department of Internal Medicine, Medical University of Graz, Graz, Austria