RT Journal Article SR Electronic T1 The use of oxygen in acute exacerbations of chronic obstructive pulmonary disease: a prospective audit of pre-hospital and hospital emergency management JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 183 OP 186 DO 10.7861/clinmedicine.3-2-183 VO 3 IS 2 A1 Ronan O'driscoll A1 Roger J Wolstenholme A1 Annette Pilling A1 Caroline Bassett A1 Mervyn Singer A1 Geoff Bellingan A1 George Skowronski YR 2003 UL http://www.rcpjournals.org/content/3/2/183.abstract AB