[1] Univ Patras, Sch Med, Div Infect Dis, GR-26110 Patras, Greece
[2] Univ Patras, Sch Med, Dept Microbiol, GR-26110 Patras, Greece
[3] Univ Patras, Sch Med, Div Anaesthesiol & Intens Care Med, GR-26110 Patras, Greece
[4] St Andrews Gen Hosp Patras, Intens Care Unit, Patras, Greece