Published on in Vol 16, No 12 (2014): December

1 Department of Gerontology and Geriatrics, Leiden University Medical Center, Leiden, The Netherlands
2 Institute for Evidence-Based Medicine in Old Age | IEMO, Leiden, The Netherlands
3 Leyden Academy on Vitality and Ageing, Leiden, The Netherlands
4 Netherlands Consortium for Healthy Aging, Leiden, The Netherlands
5 Department of Public & Occupational Health and EMGO+ Institute, VU University Medical Center, Amsterdam, The Netherlands
6 Department of Medical Statistics, section of Molecular Epidemiology, Leiden University Medical Center, Leiden, The Netherlands
7 Institute for Aging and Health, Newcastle University, Newcastle upon Tyne, United Kingdom