{"batchcode": "01/30/2021", "histograms": [{"histogram": {"Dyspnoea": 1, "Laboratory test abnormal": 1, "Pulmonary embolism": 1}, "batchcodes": ["01/30/2021", "022M20A"]}, {"histogram": {"Asthenia": 1, "Cough": 1, "Oropharyngeal pain": 1, "Pyrexia": 1}, "batchcodes": ["01/30/2021", "03/01/2021"]}]}