[{"arm_notes": "nan", "treatment_id": null, "treatment_name": "Experimental Group", "treatment_type": "Biological", "pharmacological_treatment": "Non pharmacological treatment"}, {"arm_notes": "nan", "treatment_id": null, "treatment_name": "Experimental Group", "treatment_type": "Biological", "pharmacological_treatment": "Non pharmacological treatment"}]

[{"arm_notes": "2;days0-28", "treatment_id": 2039, "treatment_name": "Ev71 vaccine+inactivated sars-cov-2 vaccine (vero cell)", "treatment_type": "Non covid vaccine+inactivated virus", "pharmacological_treatment": "Non covid vaccine+vaccine"}, {"arm_notes": "2;days0-28 vero cell;days14-42 EV71", "treatment_id": 2039, "treatment_name": "Ev71 vaccine+inactivated sars-cov-2 vaccine (vero cell)", "treatment_type": "Non covid vaccine+inactivated virus", "pharmacological_treatment": "Non covid vaccine+vaccine"}]