title: Is oxygen always safe?
mesh_terms: D006801:Humans; D006935:Hypercapnia / Q000209:etiology; D000860:Hypoxia / Q000209:etiology; D008722:Methods; D010100:Oxygen / Q000008:administration & dosage / Q000009:adverse effects; D010102:Oxygen Inhalation Therapy / Q000009:adverse effects*; D012131:Respiratory Insufficiency / Q000628:therapy
chemical_list: D010100:Oxygen