1. Amsterdam Bone Center, Movement Sciences Amsterdam, Amsterdam, The Netherlands
2. Dutch Institute for Clinical Auditing, Leiden, The Netherlands.
3. Amsterdam University Medical Centers, location Academic Medical Center, Internal Medicine and Geriatrics, University of Amsterdam, Amsterdam, Netherlands
4. Amsterdam Public Health Research Institute, Amsterdam, The Netherlands.
5. Department of Trauma Surgery, Ziekenhuisgroep Twente, Almelo-Hengelo, The Netherlands.