[1] Univ Granada, Fac Ciencias Salud, Dept Enfermeria, Hosp Clin San Cecilio Granada, E-18071 Granada, Spain
[2] Junta Andalucia, Plan Andaluz Invest, Grp Invest CTS 367, Andalucia, Spain
[3] Univ Granada, Dept Enfermeria, E-18071 Granada, Spain
[4] Fac Ciencias Med Cienfuegos, Cienfuegos, Cuba