[{"arm_notes": "nan", "treatment_id": null, "treatment_name": "ACE2 Chewing Gum", "treatment_type": "Drug", "pharmacological_treatment": "Pharmacological treatment"}, {"arm_notes": "nan", "treatment_id": null, "treatment_name": "Placebo Chewing Gum", "treatment_type": "Other", "pharmacological_treatment": "Placebo"}]

[{"arm_notes": "chewing gum", "treatment_id": 1752, "treatment_name": "Angiotensin-converting enzyme inhibitors", "treatment_type": "Cardiovascular agents", "pharmacological_treatment": "Pharmacological treatment"}, {"arm_notes": "chewing gum", "treatment_id": 2187, "treatment_name": "Placebo", "treatment_type": "Placebo", "pharmacological_treatment": "Placebo"}]