1. Faculty of Education, Universidad Pontificia de Salamanca, 37002 Salamanca, Spain
2. Faculty of Health Sciences, European University of Atlantic, 39011 Santander, Spain
3. Department of Human and Social Sciences, Universidad de las Fuerzas Armadas-ESPE, Quito 171103, Ecuador
4. Health Sciences Faculty, Universidad San Jorge, Autov. A23 Km 299, Villanueva de Gállego, 50830 Zaragoza, Spain