[1] Univ Alberta, Fac Nursing, CLEAR Outcomes Res Program, Edmonton, AB, Canada
[2] Univ Sao Paulo, Gen & Specialized Dept Nursing, Ribeirao Preto, Brazil
[3] Univ Sao Paulo, Ribeirao Preto Coll Nursing, Ribeirao Preto, Brazil
[4] Univ Alberta, Fac Nursing, 5-110 Edmonton Clin Hlth Acad,11405 87 Ave, Edmonton, AB T6G 1C9, Canada