RT Journal Article SR Electronic T1 Non-cystic fibrosis bronchiectasis JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 401 OP 402 DO 10.7861/clinmedicine.9-4-401 VO 9 IS 4 A1 Robert Cowie A1 Stephen Field YR 2009 UL http://www.rcpjournals.org/content/9/4/401.abstract