1. Department of Mechanical Engineering, University of Canterbury, Christchurch, New Zealand
2. Institute of Technical Medicine, Furtwangen University, Villingen-Schwenningen, Germany
3. Department of Surgery, University of Otago, Christchurch, New Zealand
4. Department of Biomedical Engineering, School of Life & Health Sciences, Aston University, Birmingham, UK
5. Department of Mechanical and Industrial Engineering, University of South Africa, Johannesburg, South Africa