```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>Essenti-Diabete@23:25:57</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)Essenti-hyper@23:15:28</item_name>
            <item_key>masterid:2154</item_key>
            <tooltip>Essenti-hyper@23:15:28</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>0</hlevel>
            <item_name>(PrevQuery)Diabetes Mellitus (e08-e13)@23:21:00</item_name>
            <item_key>masterid:2155</item_key>
            <tooltip>Diabetes Mellitus (e08-e13)@23:21:00</tooltip>
            <item_is_synonym>false</item_is_synonym>
        </item>
    </panel>
</ns4:query_definition>

```

I want to find patients who have been diagnosed with Diabetes Mellitus (e08-e13) at any time and who have had a previous query for Essenti-hyper@23:15:28. This query has a specificity scale of 0 and a panel accuracy scale of 100. The query timing is set to ANY, which means that the diagnosis of Diabetes Mellitus and the previous query for Essenti-hyper can occur at any point in the patient's medical history. The query will not be inverted, and the total number of items in the panel is 1 for each of the two panels.