{"batchcode": "023H20A", "histograms": [{"batchcodes": ["023H20A", "029H21H"], "histogram": {"Cardiac murmur": 1, "Chest pain": 1, "Dyspnoea": 1, "Fatigue": 1, "Heart rate increased": 1, "Palpitations": 1}}, {"batchcodes": ["023H20A"], "histogram": {"Fatigue": 1}}]}