1. Department of Health Services Research, Care and Public Health Research Institute (CAPHRI), Maastricht University, 6200 MD Maastricht, The Netherlands
2. Center for Geriatric Medicine, Agaplesion Bethanien Hospital Heidelberg, Geriatric Center at the Heidelberg University, 69126 Heidelberg, Germany
3. Institute for Health and Generations, University of Applied Sciences Kempten, 87435 Kempten, Germany
4. Danone Trading Medical B.V., 2132 LS Hoofddorp, The Netherlands
5. Academic Unit of Injury, Recovery and Inflammation Sciences (IRIS), School of Medicine, University of Nottingham, Nottingham NG7 2UH, UK
6. NIHR Applied Research Collaboration-East Midlands (ARC-EM), Nottingham DE22 3NE, UK
7. Danone Nutricia Research, 3584 CT Utrecht, The Netherlands
8. Department of Family Medicine and Care and Public Health Research Institute (CAPHRI), Maastricht University, 6200 MD Maastricht, The Netherlands