[{"arm_notes": "", "treatment_id": null, "treatment_name": "Experimental group:Hydrogen-Oxygen Nebulizer;Control group:Oxygen concentrator;", "treatment_type": "TODO", "pharmacological_treatment": "TODO"}, {"arm_notes": "", "treatment_id": null, "treatment_name": "Experimental group:Hydrogen-Oxygen Nebulizer", "treatment_type": "TODO", "pharmacological_treatment": "TODO"}, {"arm_notes": "", "treatment_id": null, "treatment_name": "Control group:Oxygen concentrator;", "treatment_type": "TODO", "pharmacological_treatment": "TODO"}]

[{"arm_notes": "", "treatment_id": 605, "treatment_name": "Hydrogen-oxygen nebulizer", "treatment_type": "Gas inhalation", "pharmacological_treatment": "Non pharmacological treatment"}, {"arm_notes": "", "treatment_id": 943, "treatment_name": "Oxygen", "treatment_type": "Gas inhalation", "pharmacological_treatment": "Non pharmacological treatment"}]