1. Dept. of Mining Technology, Topography and Structures, Universidad de León, Spain
2. Dept. of Mechanical Engineering, Universidad de Salamanca, Béjar (Salamanca) Spain
3. Dept. of Nursing and Physiotheraphy, Universidad de León, Spain
4. Inst. of Biomedicine (IBIOMED) / Dept. of Biomedical Sciences, Universidad de León, Spain