{"batchcode": "EP6957", "histograms": [{"histogram": {"Deafness unilateral": 1, "Head discomfort": 1, "Headache": 1, "Hypoacusis": 1, "Irritability": 1, "Ophthalmological examination": 1, "Tinnitus": 1}, "batchcodes": ["EP6957"]}]}