[{"arm_notes": "nan", "treatment_id": null, "treatment_name": "placebo", "treatment_type": "Other", "pharmacological_treatment": "Placebo"}, {"arm_notes": "nan", "treatment_id": null, "treatment_name": "Vitamin D2", "treatment_type": "Drug", "pharmacological_treatment": "Pharmacological treatment"}]

[{"arm_notes": "nan", "treatment_id": 1370, "treatment_name": "Vitamin d", "treatment_type": "Vitamins and dietary supplements", "pharmacological_treatment": "Pharmacological treatment"}, {"arm_notes": "nan", "treatment_id": 2187, "treatment_name": "Placebo", "treatment_type": "Placebo", "pharmacological_treatment": "Placebo"}]