{"batchcode": "200021A", "histograms": [{"histogram": {"Magnetic resonance imaging head": 2, "SARS-CoV-2 test": 2, "Arteriogram carotid": 1, "Arthralgia": 1, "Blindness transient": 1, "Cerebral infarction": 1, "Dizziness": 1, "Fatigue": 1, "Headache": 1, "Ischaemic stroke": 1, "Left ventricular dysfunction": 1, "Nausea": 1, "Pulmonary embolism": 1, "Pulmonary hypertension": 1, "Pulmonary infarction": 1, "Scan brain": 1}, "batchcodes": ["200021A"]}]}