Which intervention helps prevent ventilator associated pneumonia (VAP)? Application of ventilator associated events (VAE) in ventilator associated pneumonia (VAP) notified in Brazil (IMPACTO MR PAV): a protocol for a cohort study BMJ Open An in depth look at ventilator associated pneumonia in trauma patients and efforts to increase bundle compliance, education and documentation in a surgical trauma critical care unit American Journal of Infection Control Ventilator Associated Pneumonia (VAP) EMCrit Project