[{"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": 222, "treatment_name": "Bnt162b2", "treatment_type": "Rna based vaccine", "pharmacological_treatment": "Vaccine"}]