1. Faculty of Nursing and Podiatry, Department of Nursing, Frailty Research Organizaded Group (FROG) University of Valencia Spain
2. Faculty of Health Sciences Universidad Rey Juan Carlos Spain
3. School of Nursing, Physiotherapy and Podiatry Universidad Complutense de Madrid Spain
4. Department of Podiatry, Faculty of Nursing, Physiotherapy and Podiatry Universidad de Sevilla Spain
5. Research, Health and Podiatry Group, Department of Health Sciences, Faculty of Nursing and Podiatry Universidade da Coruña Spain
6. Faculty Sports Sciences Universidad Europea de Madrid Madrid Spain
7. University Center of Plasencia Universidad de Extremadura Spain