1. Department of Dietetics University of Groningen, University Medical Center Groningen Groningen The Netherlands
2. Department of Internal Medicine, Division of Nephrology University of Groningen, University Medical Center Groningen Groningen The Netherlands
3. Department of Surgery University of Groningen, University Medical Center Groningen Groningen The Netherlands
4. Groningen Transplant Center University of Groningen, University Medical Center Groningen Groningen The Netherlands
5. Department of Oral and Maxillofacial Surgery University of Groningen, University Medical Center Groningen Groningen The Netherlands
6. Research Group Healthy Ageing, Health Care and Nursing Hanze University of Applied Sciences Groningen The Netherlands