{"batchcode": "011V20A", "histograms": [{"batchcodes": ["011V20A", "029K20A"], "histogram": {"Blood bilirubin": 1, "Full blood count": 1, "Laboratory test": 1, "Pruritus": 1}}, {"batchcodes": ["011V20A", "042L20A"], "histogram": {"Chills": 1, "Head discomfort": 1, "Headache": 1, "Pain": 1, "Pyrexia": 1}}, {"batchcodes": ["011V20A"], "histogram": {"Cardiac stress test": 1, "Dyspnoea": 1, "Echocardiogram": 1, "Erythema": 1, "Hypersensitivity": 1, "Peripheral swelling": 1, "Ultrasound Doppler": 1, "Vaccination complication": 1}}]}