RT Journal Article SR Electronic T1 Acute respiratory medicine JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 267 OP 271 DO 10.7861/clinmedicine.7-3-267 VO 7 IS 3 A1 Melissa Heightman A1 Geoff Bellingan YR 2007 UL http://www.rcpjournals.org/content/7/3/267.abstract AB