[1] Univ Sydney, Sch Business, Work & Org Studies, Sydney, NSW, Australia
[2] Bern Univ Hosp, Inselspital, Dept Intens Care Med, Bern, Switzerland
[3] Univ Hosp Zurich, Inst Intens Med, Zurich, Switzerland
[4] Univ Appl Sci & Arts Northwestern Switzerland, FHNW Sch Appl Psychol, Riggenbachstr 16, CH-4600 Olten, Switzerland