1. Department of Mechanical Engineering, University of Zaragoza, Maria de Luna 3, 50018 Zaragoza, Spain
2. Department of Gastroenterology, Miguel Servet University Hospital, Paseo Isabel la Católica 1, 50009 Zaragoza, Spain
3. Department of Material Science, University of Zaragoza, Maria de Luna 3, 50018 Zaragoza, Spain
4. Department of Manufacturing Engineering, University of Zaragoza, Maria de Luna 3, 50018 Zaragoza, Spain
5. Department of Surgery, University of Zaragoza, Domingo Miral, 50009 Zaragoza, Spain
6. Department of Orthopaedic Surgery and Traumatology, Miguel Servet University Hospital, Paseo Isabel la Católica 1, 50009 Zaragoza, Spain