[1] Aarhus Univ Hosp, Dept Intens Care East, Aarhus, Denmark
[2] Aarhus Univ Hosp, Dept Intens Care, Entrance G,G302,Palle Juul Jensens Blvd 99, DK-8200 Aarhus N, Denmark
[3] Univ Aarhus, Sect Nursing, Inst Publ Hlth, Aarhus, Denmark
[4] Ctr Res Clin Nursing, Viborg, Denmark
[5] Deakin Univ, Sch Nursing & Midwifery, Geelong, Vic, Australia