1. Department of Orthopedic Surgery, Academic Medical Center, University of Amsterdam, Amsterdam Movement Sciences, Amsterdam 1105 AZ, The Netherlands
2. Department of Human Movement Sciences, Vrije Universiteit, Amsterdam Movement Sciences, Amsterdam 1081 BT, The Netherlands
3. Department of Physics and Medical Technology, VU University Medical Center, Amsterdam 1081 HV, The Netherlands
4. Department of Orthopedic Surgery, VU University Medical Center, Amsterdam 1081 HV, The Netherlands
5. Department of Epidemiology and Biostatistics, VU University Medical Center, Amsterdam 1081 BT, The Netherlands
6. Department of Plastic, Reconstructive and Hand Surgery, VU University Medical Center, Amsterdam 1081 HV, The Netherlands
7. Department of Oral and Maxillofacial Surgery, VU University Medical Center, Amsterdam 1081 HV, The Netherlands
8. Department of Orthopedic Surgery, Academic Medical Center, University of Amsterdam, Amsterdam Movement Sciences, Amsterdam 1105 AZ, The Netherlands;
9. Department of Medical Biology, Academic Medical Center, University of Amsterdam, Amsterdam 1105 AZ, The Netherlands e-mail: