{"batchcode": "30C4674", "histograms": [{"batchcodes": ["30C4674"], "histogram": {"Dyspnoea": 1, "Fatigue": 1, "Palpitations": 1, "SARS-CoV-2 test": 1, "Sinus rhythm": 1, "Syncope": 1, "Tachyarrhythmia": 1, "Tachycardia": 1}}]}