{"batchcode": "0G0H21A", "histograms": [{"histogram": {"Cardiac monitoring abnormal": 1, "Cardiac stress test": 1, "Fatigue": 1, "Infectious mononucleosis": 1, "Laboratory test abnormal": 1, "Mononucleosis heterophile test positive": 1, "Pain": 1, "Palpitations": 1, "Supraventricular extrasystoles": 1, "Supraventricular tachycardia": 1, "Ventricular extrasystoles": 1, "Ventricular tachycardia": 1}, "batchcodes": ["0G0H21A"]}]}