[{"arm_notes": "nan", "treatment_id": null, "treatment_name": "COVI-MSC", "treatment_type": "Biological", "pharmacological_treatment": "Non pharmacological treatment"}, {"arm_notes": "nan", "treatment_id": null, "treatment_name": "COVI-MSC", "treatment_type": "Biological", "pharmacological_treatment": "Non pharmacological treatment"}]

[{"arm_notes": "1 vial", "treatment_id": 787, "treatment_name": "Mesenchymal stem cells", "treatment_type": "Advanced therapy medicinal products (atmp)", "pharmacological_treatment": "Biological treatment"}, {"arm_notes": "2 vial", "treatment_id": 787, "treatment_name": "Mesenchymal stem cells", "treatment_type": "Advanced therapy medicinal products (atmp)", "pharmacological_treatment": "Biological treatment"}]