{"batchcode": "EW739", "histograms": [{"batchcodes": ["EW739"], "histogram": {"SARS-CoV-2 test": 2, "Acoustic stimulation tests": 1, "Ear discomfort": 1, "Influenza like illness": 1, "Malaise": 1, "Tinnitus": 1, "Vaccination site pain": 1}}]}