[1] Univ Queensland, Sch Nursing Midwifery & Social Work, Level 3,Chamberlain Bldg, St Lucia, Qld 4072, Australia
[2] Charles Darwin Univ, Coll Nursing & Midwifery, Casuarina, NT, Australia
[3] Univ Queensland, Ctr Business & Econ Hlth, Woolloongabba, Qld, Australia