1. Tissue Engineering Laboratory, Skeletal Biology and Engineering Research Center, Katholieke Universiteit Leuven, Leuven, Belgium.
2. Prometheus, Division of Skeletal Tissue Engineering, Katholieke Universiteit Leuven, Leuven, Belgium.
3. Biomechanics Research Unit, University of Liege, Liege, Belgium.
4. Department of Mechanical Engineering, Biomechanics Section, Katholieke Universiteit Leuven, Heverlee, Belgium.
5. Institute of Orthopaedics and Musculoskeletal Science, Division of Surgery and Interventional Science, University College London, The Royal National Orthopaedic Hospital, London, United Kingdom.