RT Journal Article SR Electronic T1 Head of Bed Elevation and Ventilator-Associated Pneumonia JF Respiratory Care FD American Association for Respiratory Care SP 659 OP 660 DO 10.4187/respcare.01797 VO 57 IS 4 A1 Harbrecht, Brian G YR 2012 UL http://rc.rcjournal.com/content/57/4/659.abstract AB