Published on in Vol 18, No 4 (2016): April

1 Leiden University Medical Center, Department of Gerontology and Geriatrics, Leiden, Netherlands, The
2 Institute for Evidence-Based Medicine in Old Age, Leiden, Netherlands, The
3 Leyden Academy on Vitality and Ageing, Leiden, Netherlands, The
4 ExtraMuraal Gezondheids Onderzoek (EMGO+) Institute for Health and Care Research, Department of Public and Occupational Health, Vrije Universiteit (VU) University Medical Center, Amsterdam, Netherlands, The
5 Department of Medical Statistics, Section of Molecular Epidemiology, Leiden University Medical Center, Leiden, Netherlands, The
†deceased