RT Journal Article SR Electronic T1 Streamlining weaning: protocols and weaning units JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 175 OP 182 DO 10.1136/thx.2004.028688 VO 60 IS 3 A1 A K Simonds YR 2005 UL http://thorax.bmj.com/content/60/3/175.abstract AB