RT Journal Article SR Electronic T1 Acute hypercapnic respiratory failure (AHRF): looking at long-term mortality, prescription of long-term oxygen therapy and chronic non-invasive ventilation (NIV) JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 188 OP 190 DO 10.7861/clinmedicine.12-2-188 VO 12 IS 2 A1 Ahmad Nawaid A1 Anika Taithongchai A1 Rehana Sadiq A1 Naveed Mustfa A1 Guy Hagan YR 2012 UL http://www.rcpjournals.org/content/12/2/188.1.abstract