{"batchcode": "PCA003", "histograms": [{"batchcodes": ["PCA003"], "histogram": {"Palpitations": 2, "Angina pectoris": 1, "Blood test": 1, "Body temperature": 1, "COVID-19": 1, "Chest discomfort": 1, "Chest pain": 1, "Electrocardiogram": 1, "Electrocardiogram ambulatory": 1, "Erythema": 1, "Exercise electrocardiogram": 1, "Headache": 1, "Heart rate": 1, "Heart rate increased": 1, "Malaise": 1, "Neck pain": 1, "Paraesthesia": 1, "Pyrexia": 1, "Respiration abnormal": 1, "SARS-CoV-2 test": 1, "Vaccination failure": 1}}]}