RT Journal Article SR Electronic T1 Treatment of empyema thoracis. JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 845 OP 846 DO 10.1136/thx.49.9.845 VO 49 IS 9 A1 Kaplan, D K YR 1994 UL http://thorax.bmj.com/content/49/9/845.abstract AB