1. Medical University of Vienna, Department of Pediatrics and Adolescent Medicine, Vienna, Austria
2. Medical University of Vienna, Section for Medical Statistics, Vienna, Austria
3. Medical University of Vienna, Department of Emergency Medicine, Vienna, Austria
4. Medical University of Vienna, Christian Doppler Laboratory for Molecular Stress Research in Peritoneal Dialysis, Vienna, Austria
5. Vifor Pharma, Zurich, Switzerland
6. Medical University of Vienna, Department of Medicine III, Vienna, Austria