{"batchcode": "PFIZER FF8839", "histograms": [{"batchcodes": ["PFIZER FF8839", "PFIZER FN8027"], "histogram": {"Arthralgia": 1}}, {"batchcodes": ["PFIZER FF8839"], "histogram": {"Dizziness": 2, "Asthenia": 1, "Balance disorder": 1, "Contusion": 1, "Disorientation": 1, "Flatulence": 1, "Headache": 1, "Insomnia": 1, "Mobility decreased": 1, "Pain in extremity": 1, "Peripheral swelling": 1, "Varicose vein ruptured": 1}}]}