{"batchcode": "ER3734", "histograms": [{"batchcodes": ["EP7534", "ER3734"], "histogram": {"Subdural haematoma": 1}}, {"batchcodes": ["ER3734"], "histogram": {"Abdominal pain upper": 1, "Constipation": 1, "Lymph node pain": 1, "Lymphadenopathy": 1, "Swelling": 1}}]}