1. Facultad de Enfermería, Fisioterapia y Podología, Universidad Complutense de Madrid, Madrid, Spain
2. Faculty of Health Sciences, Universidad Rey Juan Carlos, Alcorcón, Spain
3. Research, Health and Podiatry Unit, Department of Health Sciences. Faculty of Nursing and Podiatry, Universidade da Coruña, Coruña, Spain
4. Department of Nursing, University Center of Plasencia, University of Extremadura, Extremadura, Spain