[1] Abu Dhabi Hlth Serv SEHA, Abu Dhabi, U Arab Emirates
[2] Griffith Univ, Sch Nursing & Midwifery, Nathan, Qld, Australia
[3] Tawam Hosp, Intens Care Unit, Al Ain, U Arab Emirates
[4] Sheikh Khalifa Med City, Intens Care Unit, Abu Dhabi, U Arab Emirates
[5] Al Mafraq Hosp, Abu Dhabi, U Arab Emirates
[6] Al Ain Hosp, Intens Care Unit, Abu Dhabi, U Arab Emirates
[7] Griffith Univ, Gold Coast Hlth, Dept Emergency Med, Nathan, Qld, Australia