Query: When was my last flu shot?, FHIR Resource: {'resourceType': 'DiagnosticReport', 'status': 'final', 'category': None, 'code': {'coding': [{'system': 'http://loinc.org', 'code': '55757-9', 'display': 'Patient Health Questionnaire 2 item (PHQ-2) [Reported]'}], 'text': 'Patient Health Questionnaire 2 item (PHQ-2) [Reported]'}, 'subject': {'reference': 'urn:uuid:514d3cd5-9d59-c1c1-9457-aad183a74c4f'}, 'effectiveDateTime': '2015-09-19T15:30:32+05:30', 'result': [{'reference': 'urn:uuid:c9e5a193-e6c5-5174-6560-8677411e5cbe', 'display': 'Patient Health Questionnaire 2 item (PHQ-2) total score [Reported]'}]}