[1] Reinier de Graaf Group,Department of Orthopedic Surgery
[2] Centre for Orthopedic Surgery OCON,Department of Surgery
[3] Erasmus MC,Traumatology
[4] University Medical Centre Rotterdam,Department of Internal Medicine
[5] Section of Gerontology and Geriatrics,undefined
[6] VU University Medical Centre,undefined
[7] Department of Orthopedic Surgery Leiden University Medical Centre,undefined