[{"arm_notes": "nan", "treatment_id": null, "treatment_name": "Serological testing", "treatment_type": "DIAGNOSTIC_TEST", "pharmacological_treatment": "TODO"}]

[{"arm_notes": "nan", "treatment_id": null, "treatment_name": "Serological testing", "treatment_type": "Diagnostic Test", "pharmacological_treatment": "TODO"}]

[{"arm_notes": "2", "treatment_id": 161, "treatment_name": "Chadox1 ncov-19", "treatment_type": "Non replicating viral vector", "pharmacological_treatment": "Vaccine"}]