1. Department of Health Sciences
2. Modeling, Optimization and Statistical Inference Research Group; University of A Coruña; A Coruña
3. Department of Nursing; King Juan Carlos University; Alcoron
4. Department of Physiotherapy; European University of Madrid
5. Department of Podiatry; University of Seville; Seville Spain
6. School of Nursing, Physiotherapy and Podiatry; Complutense University of Madrid; Madrid