1. University of Twente, Faculty of Electrical Engineering, Mathematics and Computer Science, P.O. Box 217, 7500AE Enschede, The Netherlands
2. Ziekenhuisgroep Twente, Department of Surgery, Diabetic Foot Unit, P.O. Box 7600, 7600SZ Almelo, The Netherlands
3. Ziekenhuisgroep Twente, Department of Surgery, Diabetic Foot Unit, P.O. Box 7600, 7600SZ Almelo, The NetherlandscUniversity of Amsterdam, Academic Medical Center, Department of Rehabilitation, Meibergdreef 9, 1105AZ Amsterdam, The Netherlands