[1] Fdn Jimenez Diaz Hosp Bibliovirtual, Madrid, Spain
[2] Virtual Hlth Sci Lib Balear Isl Bibliosalut, Palma De Mallorca, Spain
[3] Univ Basque Country UPV EHU, Donostia San Sebastian, Spain
[4] Univ Extremadura, Dept Nursing, Nursing & Occupat Therapy Coll, Caceres, Spain
[5] Alfonso X El Sabio Univ, Hlth Sci Coll, Madrid, Spain