The Journal of Physical Chemistry B Vol. 129 No. 39 ACS Publications Frontiers Use of polymyxin B with different administration methods in the critically ill patients with ventilation associated pneumonia: a single center experience Screening for ventilator associated pneumonia infection through a breath test Prevention of ventilator associated pneumonia, mortality and all intensive care unit acquired infections by topically applied antimicrobial or antiseptic agents: a meta analysis of randomized controlled trials in intensive care units Critical Care