{"batchcode": "EW 6207", "histograms": [{"batchcodes": ["EW 6207"], "histogram": {"Blood test": 1, "Breast swelling": 1, "Cardiac function test": 1, "Cardiac stress test": 1, "Laboratory test abnormal": 1, "Myocardial infarction": 1, "Peripheral swelling": 1, "Stent placement": 1}}]}