{"batchcode": "023L204", "histograms": [{"histogram": {"Blood pressure increased": 1, "Blood test": 1, "Cardiac operation": 1, "Cardiac stress test": 1, "Chest pain": 1, "Dizziness": 1, "Dyspnoea": 1, "Electrocardiogram abnormal": 1, "Headache": 1, "Laboratory test": 1, "Myocardial infarction": 1, "Nausea": 1, "Stent placement": 1}, "batchcodes": ["023L204"]}]}