[1] Univ Valladolid, Nursing Sch Palencia, Dept Nursing, Palencia, Spain
[2] Univ Granada, Nursing Dept, Granada, Spain
[3] Univ Leon, Dept Nursing & Physiotherapy, Leon, Spain
[4] Univ Valladolid, Dept Nursing, Valladolid, Spain
[5] Gen Directorate Informat Syst Qual & Pharmaceut P, Valladolid, Spain
[6] Childrens Univ Hosp Nino Jesus, Pediat Oncol Hematol Dept, Pediat OncoGen & Innovat Unit, Madrid, Spain