[{"arm_notes": "", "treatment_id": null, "treatment_name": "experimental group:Covid-19 Vaccine injection;", "treatment_type": "TODO", "pharmacological_treatment": "TODO"}]

[{"arm_notes": "", "treatment_id": 1911, "treatment_name": "Covid-19 vaccine", "treatment_type": "Other covid vaccine", "pharmacological_treatment": "Vaccine"}]