[1] Univ Sao Paulo, Hosp Clin, Emergency Med Discipline, Intens Care Unit, Sao Paulo, Brazil
[2] Hosp Alemao Oswaldo Cruz, Intens Care Unit, Sao Paulo, Brazil
[3] Univ Fed Sao Paulo, Hosp Sao Paulo, Discipline Anaesthesia Pain & Intens Care Med, Sao Paulo, Brazil
[4] Univ Fed Sao Paulo, Escola Paulista Med, Hosp Sao Paulo, Div Infect Dis, Sao Paulo, Brazil