1. Department of Structural and Mechanical Engineering, University of Cantabria, Santander, Spain
2. Department of Electronic Technology and Systems Engineering and Automation, University of Cantabria, Santander, Spain
3. Department of Medicine and Psychiatry, University of Cantabria, Santander, Spain
4. Department of Medical and Surgical Sciences, University of Cantabria, Santander, Spain
5. Colorectal Unit, Marques de Valdecilla University Hospital, Santander, Spain