1. Leon Root, MD Motion Analysis Laboratory, Department of Rehabilitation, Hospital for Special Surgery, New York, NY, USA
2. Imperial College Healthcare NHS Trust, St. Mary's Hospital, London, UK
3. Department of Hand Surgery, Plastic Surgery and Burns in Linköping, and Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
4. Chelsea & Westminster Hospital, London, United Kingdom; Imperial College London, London, UK