{"batchcode": "123A21A", "histograms": [{"histogram": {"Cardiac stress test": 1, "Chest discomfort": 1, "Electrocardiogram": 1, "Oral mucosal blistering": 1, "Pain in extremity": 1, "Palpitations": 1, "Paraesthesia": 1, "Specialist consultation": 1, "Ultrasound scan": 1}, "batchcodes": ["031M20A", "123A21A", "169H21A"]}]}