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