[1] Univ Complutense Madrid, Dept Enfermeria, Fac Enfermeria Fisioterapia & Podol, Plaza Ramon y Cajal 3,Ciudad Univ, Madrid 28040, Spain
[2] Univ Complutense Madrid, Fac Enfermeria Fisioterapia & Podol, Estudiante Grado Enfermeria, Madrid 28040, Spain
[3] Univ Catolica Portuguesa, Nursing Sch Lisbon, Inst Hlth Sci, Ctr Interdisciplinary Res Hlth, P-1649023 Lisbon, Portugal
[4] Minist Def, Escuela Mil Sanidad, Acad Cent Def, Madrid 28040, Spain