1. Bethesda Diabetes Research Center Hoogeveen The Netherlands
2. Department of Internal MedicineBethesda General Hospital, Treant Care Group Hoogeveen The Netherlands
3. Hanze University of Applied Sciences Groningen, Research Group Healthy Ageing, Allied Health Care and Nursing Groningen The Netherlands
4. Department of Oral and Maxillofacial SurgeryUniversity of Groningen, University Medical Center Groningen Groningen The Netherlands
5. Department of Rehabilitation MedicineUniversity of Groningen, University Medical Center Groningen Groningen The Netherlands
6. Department of Statistics, Faculty of EconomicsLouvain Academy Mons Belgium
7. Department of Internal Medicine and Cardiovascular ResearchMaastricht University Medical Centre Maastricht The Netherlands
8. Department of Internal MedicineUniversity of Groningen, University Medical Center Groningen Groningen The Netherlands