[1] City Univ London, Sch Hlth Sci, London EC1V 0HB, England
[2] Griffith Univ, Menzies Hlth Inst Queensland, Natl Ctr Res Excellence Nursing, Nathan, Qld, Australia
[3] Princess Alexandra Hosp, Intens Care Unit, Woolloongabba, Qld, Australia
[4] Univ Dundee, Sch Nursing & Hlth Sci, Dundee DD1 4HJ, Scotland
[5] Univ Queensland, Sch Psychol, St Lucia, Qld 4072, Australia
[6] Univ Queensland, Recover Injury Res Ctr, Level 7,Oral Hlth Bldg, Herston, Qld 4029, Australia
[7] Univ Dundee, Dept Psychiat, NHS Tayside, Perth, Scotland
[8] Perth Royal Infirm, Multidisciplinary Adult Psychotherapy Serv, Perth PH1 1NX, Scotland
[9] Univ Queensland, Sch Nursing Midwifery & Social Work, St Lucia, Qld 4072, Australia
[10] Griffith Univ, Menzies Hlth Inst Queensland, Sch Nursing & Midwifery, NHMRC Ctr Res Excellence Nursing, Nathan, Qld 4111, Australia
[11] Griffith Univ, Menzies Hlth Inst Queensland, Nathan, Qld 4111, Australia