[1] Griffith Univ, Sch Nursing & Midwifery, Bldg N48, Nathan, Qld 4111, Australia
[2] Univ Queensland, Sch Nursing Midwifery & Social Work, Tri Woolloongabba, Qld 4102, Australia
[3] Princess Alexandra Hosp, Dept Emergency Med, Ipswich Rd, Woolloongabba, Qld 4102, Australia
[4] Edith Cowan Univ, Sch Nursing & MIdwifery, Joondalup Dr, Joondalup, WA 6027, Australia