```xml
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<ns3:query_definition xmlns:ns2="http://www.i2b2.org/xsd/cell/crc/psm/1.1/" xmlns:ns4="http://www.i2b2.org/xsd/cell/crc/psm/analysisdefinition/1.1/" xmlns:ns3="http://www.i2b2.org/xsd/cell/crc/psm/querydefinition/1.1/">
    <query_name>  18--Hyper-HMG@23:30:05</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)  18--Hyper-HMG@20:45:17</item_name>
            <item_key>masterid:524</item_key>
            <tooltip>  18--Hyper-HMG@20:45:17</tooltip>
            <item_is_synonym>false</item_is_synonym>
        </item>
        <item>
            <hlevel>4</hlevel>
            <item_name>Other and unspecified hyperlipidemia</item_name>
            <item_key>\\i2b2_DIAG\i2b2\Diagnoses\Metabolic and immunity disorders (270-279)\(272) Disorders of lipoid metabol~\(272-4) Other and unspecified hyp~\</item_key>
            <item_icon>FA</item_icon>
            <tooltip>Diagnoses \ Metabolic and immunity disorders \ Disorders of lipoid metabolism \ Other and unspecified hyperlipidemia</tooltip>
            <class>ENC</class>
            <constrain_by_modifier>
                <modifier_name>Principal Diagnosis</modifier_name>
                <modifier_key>\\i2b2_DIAG\Principal Diagnosis\</modifier_key>
                <applied_path>\i2b2\Diagnoses\Metabolic and immunity disorders (270-279)\%</applied_path>
            </constrain_by_modifier>
            <item_is_synonym>false</item_is_synonym>
        </item>
        <item>
            <hlevel>0</hlevel>
            <item_name>(PrevQuery)Hyperli-HMG-CoA@12:34:21 [1-24-2018] [demo]</item_name>
            <item_key>masterid:89</item_key>
            <tooltip>Hyperli-HMG-CoA@12:34:21 [1-24-2018] [demo]</tooltip>
            <item_is_synonym>false</item_is_synonym>
        </item>
    </panel>
</ns3:query_definition>

```

I want to find patients with a principal diagnosis of "Other and unspecified hyperlipidemia" within the time frame of ANY and have had a previous query of "18--Hyper-HMG@20:45:17" or "Hyperli-HMG-CoA@12:34:21 [1-24-2018] [demo]" in their medical records. The specificity scale is set to 0, indicating that the query is not specific to any particular patient characteristic or attribute, and the panel accuracy scale is set to 100, indicating a high level of accuracy in the results.