title: Long-term oxygen therapy.
authors.affiliation: Pulmonary Center, Boston University School of Medicine, MA, USA.
authors.forename: S P
authors.initials: SP
authors.lastname: Tarpy
authors.forename: B R
authors.initials: BR
authors.lastname: Celli
mesh_terms: D006801:Humans; D000860:Hypoxia / Q000503:physiopathology / Q000628:therapy*; D008173:Lung Diseases, Obstructive / Q000628:therapy; D010102:Oxygen Inhalation Therapy; D013997:Time Factors