Symptom duration

{
    "conversation": {
        "id": "51feddd4-8daa-4b2a-9579-7bd666587a8a",
        "scenario": "consultation_routine",
        "phase": "duration",
        "available_commands": [
            "STOP_CONVERSATION"
        ],
        "symptoms_summary": {
            "selected": [
                {
                    "cui": "C0040822",
                    "name": "Tremor or trembling"
                }
            ],
            "excluded": [
                {
                    "cui": "C0036572",
                    "name": "Fits/seizure"
                },
                {
                    "cui": "C0036973",
                    "name": "Shivering or chills"
                }
            ]
        }
    },
    "question": {
        "type": "generic",
        "messages": [
            {
                "type": "generic",
                "value_type": "TEXT",
                "value": "Thank you for confirming that, John.",
                "meta": {}
            },
            {
                "type": "generic",
                "value_type": "TEXT",
                "value": "How long have you had this symptom?",
                "meta": {}
            }
        ],
        "mandatory": true,
        "multiple": false,
        "choices": [
            {
                "type": "generic",
                "id": "hour",
                "label": "Few hours"
            },
            {
                "type": "generic",
                "id": "day",
                "label": "Few days"
            },
            {
                "type": "generic",
                "id": "week",
                "label": "Few weeks"
            },
            {
                "type": "generic",
                "id": "month",
                "label": "Few months"
            },
            {
                "type": "generic",
                "id": "year",
                "label": "More than 3 months"
            }
        ]
    },
    "user": {
        "name": "John",
        "gender": "m",
        "age": 33,
        "year_of_birth": 1990,
        "other": false,
        "initial_symptom": "shaking"
    }
}