[1] NMC Specialty Hosp, Dept Crit Care Med, Abu Dhabi, U Arab Emirates
[2] Coll Med & Hlth Sci, Dept Internal Med, Abu Dhabi, U Arab Emirates
[3] European Soc Intens Care Med ESICM, Dept Crit Care Med, Brussels, Belgium
[4] Max Super Specialty Hosp, New Delhi, India