```xml
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<ns4:query_definition xmlns:ns2="http://www.i2b2.org/xsd/cell/crc/psm/1.1/" xmlns:ns4="http://www.i2b2.org/xsd/cell/crc/psm/querydefinition/1.1/" xmlns:ns3="http://www.i2b2.org/xsd/cell/crc/psm/analysisdefinition/1.1/">
    <query_name>-Circulatory system@14:24:15</query_name>
    <query_timing>ANY</query_timing>
    <specificity_scale>0</specificity_scale>
    <panel>
        <panel_number>1</panel_number>
        <panel_timing>ANY</panel_timing>
        <panel_accuracy_scale>100</panel_accuracy_scale>
        <invert>0</invert>
        <total_item_occurrences>1</total_item_occurrences>
        <item>
            <hlevel>0</hlevel>
            <item_name>(PrevQuery) </item_name>
            <item_key>masterid:28479</item_key>
            <tooltip>(PrevQuery) Circulatory system@14:23:27</tooltip>
            <item_is_synonym>false</item_is_synonym>
        </item>
    </panel>
    <panel>
        <panel_number>2</panel_number>
        <panel_timing>ANY</panel_timing>
        <panel_accuracy_scale>100</panel_accuracy_scale>
        <invert>0</invert>
        <total_item_occurrences>1</total_item_occurrences>
        <item>
            <hlevel>2</hlevel>
            <item_name>Circulatory system</item_name>
            <item_key>\\i2b2_DIAG\i2b2\Diagnoses\Circulatory system (390-459)\</item_key>
            <item_icon>FA</item_icon>
            <tooltip>Diagnoses \ Circulatory system</tooltip>
            <class>ENC</class>
            <item_is_synonym>false</item_is_synonym>
        </item>
    </panel>
</ns4:query_definition>

```

I want to find all patients with diagnoses related to the circulatory system, including any diagnoses in the range of 390-459, at any time during their medical history, and combine it with the previous query results at 14:24:15. The specificity scale is set to 0, meaning all diagnoses within the circulatory system category will be included, and the panel accuracy scale is set to 100, indicating high confidence in the results. The query will return a single panel with two items: the first item being the previous query results, and the second item being the Circulatory system diagnoses. The query is not inverted, and the total number of occurrences for each item is one. The hierarchy level for the first item is 0, and the hierarchy level for the second item is 2. The icon for the second item is FA, and the class is ENC.