RT Journal Article SR Electronic T1 A simplified tool for predicting mortality in ventilator-associated pneumonia JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 69 OP 69 DO 10.1136/thx.2009.127423 VO 65 IS 1 A1 M P Wise YR 2010 UL http://thorax.bmj.com/content/65/1/69.abstract AB