1. Institute of Nursing Science; University of Basel; Basel Switzerland
2. Division of Transplant Immunology and Nephrology; University Hospital Basel; Basel Switzerland
3. Centre for Chronobiology; Psychiatric Clinics; University of Basel; Basel Switzerland
4. Department of Biobehavioral and Health Sciences; College of Nursing; University of Illinois Chicago; Chicago IL USA
5. Division of Nephrology; University Hospital Zürich; Zürich Switzerland
6. Division of Nephrology; University Hospital Bern; Bern Switzerland
7. Center for Health Services and Nursing Research; KU Leuven; Leuven Belgium