Importance of Infection Prevention from VAP and Use of Care Bundle Checklist VATICAN (Ventilator Associated Tracheobronchitis Initiative to Conduct Antibiotic Evaluation): protocol for a multicenter randomized open label trial of watchful waiting versus antimicrobial therapy for ventilator associated tracheobronchitis Ventilator associated Pneumonia: They've Zapped VAP RT Ventilator Associated Pneumonia Medicine Question Bank Ventilator Associated Pneumonia VAP Diagnosing and Managing Ventilator Associated Pneumonia