Guidelines for the prevention of ventilator associated pneumonia and their implementation. The Spanish Zero VAP bundle Medicina Intensiva Review of Hospital Acquired, Ventilator Associated, and Health CareAssociated Pneumonia in Immunocompetent Adults Ventilator Associated Pneumonia The Vexing Problem of Ventilator Associated Pneumonia: Observations on Pathophysiology, Public Policy, and Clinical Science Richard H Kallet, 2015 Strategies in the prevention of ventilator associated pneumonia Diego J. Maselli, Marcos I. Restrepo, 2011