[1] Catholic Univ Murcia UCAM, Nursing Dept, Guadalupe De Maciascoque 30107, Spain
[2] Univ Seville, Red Cross Univ Ctr Nursing, Seville 41009, Spain
[3] Univ Europea Valencia, Fac Hlth Sci, Dept Hlth Sci, Valencia 46010, Spain
[4] Univ Salamanca, Univ Sch Nursing Avila, Dept Nursing, Avila 05003, Spain
[5] Autonomous Univ Madrid, Red Cross Univ Coll Nursing, Spanish Red Cross, Madrid 28003, Spain