[1] Ahmadu Bello Univ, Teaching Hosp, Sch Post Basic Nursing Programmes Anaesthesia, Zaria, Kaduna State, Nigeria
[2] Univ Cape Town, Fac Hlth Sci, Dept Hlth & Rehabil Sci, Div Nursing & Midwifery, Rondebosch, South Africa
[3] Univ Cape Town, Fac Hlth Sci, Dept Hlth & Rehabil Sci, Rondebosch, South Africa