[1] Logan Hosp, Dept Emergency Med, Armstrong Rd & Loganlea Rd, Logan, Qld 4131, Australia
[2] Griffith Univ, Menzies Hlth Inst Queensland, Nathan, Qld, Australia
[3] Griffith Univ, Sch Nursing & Midwifery, Nathan, Qld, Australia
[4] Gold Coast Hlth, Dept Emergency Med, 1 Hosp Blvd, Southport, Qld 4215, Australia
[5] Princess Alexandra Hosp, Dept Emergency Med, Woolloongabba, Qld 4102, Australia
[6] Univ Queensland, Sch Nursing Midwifery & Social Work, Woolloongabba, Qld 4102, Australia
[7] Royal Brisbane & Womens Hosp, Emergency & Trauma Ctr, Bowen Bridge Rd, Herston, Qld 4029, Australia
[8] Univ Queensland, Fac Med, Herston Rd, Herston, Qld 4029, Australia
[9] Univ Sunshine Coast, Sch Nursing Midwifery & Paramed, 90 Sippy Downs Dr, Sippy Downs, Qld 4558, Australia
[10] Sunshine Coast Hosp & Hlth Serv, Dept Emergency Med, Nambour, Qld 4560, Australia
[11] Univ Gothenburg, Sahlgrenska Acad, Box 457, SE-40530 Gothenburg, Sweden