RT Journal Article SR Electronic T1 Capillary blood gas analysis for long term oxygen therapy assessment JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 326 OP 326 DO 10.7861/clinmedicine.1-4-326 VO 1 IS 4 A1 Joy Ridley A1 Shahid Nadeem A1 Mangalam Sridhar YR 2001 UL http://www.rcpjournals.org/content/1/4/326.abstract AB