[1] King Chulalongkorn Mem Hosp, Dept Nursing, Crit Care Excellence Ctr, Thai Red Cross Soc, Bangkok, Thailand
[2] Chulalongkorn Univ, Div Pulm & Crit Care Med, Thai Red Cross Soc,King Chulalongkorn Mem Hosp, Crit Care Excellence Ctr,Fac Med,Dept Med, Bangkok, Thailand