%0 Journal Article %A E Weitzenblum %A A Chaouat %A R Kessler %T Long-term oxygen therapy: do current guidelines need revision? %D 1999 %R 10.1034/j.1399-3003.1999.13e44.x %J European Respiratory Journal %P 1209-1210 %V 13 %N 5 %U https://erj.ersjournals.com/content/erj/13/5/1209.full.pdf