1. Department of Mechanical Engineering Khalifa University of Science and Technology Masdar Campus, Masdar City, P.O. Box 54224 Abu Dhabi UAE
2. Department of Orthopaedic Surgery Harris Orthopedics Laboratory Massachusetts General Hospital 55 Fruit St Boston MA 02114 USA
3. Department of Orthopaedic Surgery Harvard Medical School A-111, 25 Shattuck Street Boston MA 02115 USA
4. Department of Mechanical Engineering The University of Texas at Austin Austin TX 78712 USA
5. Department of Aeronautics and Astronautics Massachusetts Institute of Technology Cambridge MA 02139 USA
6. James Watt School of Engineering University of Glasgow Glasgow G12 8LT UK