RT Journal Article SR Electronic T1 Thoughts on medical oxygen, COPD and enjoying life JF Breathe JO Breathe FD European Respiratory Society SP 171 OP 172 DO 10.1183/20734735.0208-2019 VO 15 IS 3 A1 Kjartan Mogensen YR 2019 UL http://breathe.ersjournals.com/content/15/3/171.abstract AB