1. Medical University of Vienna, Department of Medicine III, Division of Nephrology & Dialysis , Vienna , Austria
2. Klinik Favoriten, Department of Medicine I with Nephrology, Intensive Medicine, Psychosomatics and Diabetology , Vienna , Austria
3. AIT Austrian Institute of Technology GmbH, Center for Health & Bioresources, Medical Signal Analysis , Vienna , Austria
4. Rosbach , Germany
5. Division of Physiology, Otto Loewi Research Center, Medical University of Graz , Graz , Austria
6. AURA Paris, Ivry sur Seine , France