RT Journal Article SR Electronic T1 Biomarkers to exclude the diagnosis of ventilator-associated pneumonia JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 5 OP 6 DO 10.1136/thoraxjnl-2014-206280 VO 70 IS 1 A1 Michael A Matthay YR 2015 UL http://thorax.bmj.com/content/70/1/5.abstract AB