```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>Intraoperative @16:16:22</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>6</hlevel>
            <item_name>Intraoperative cholangiogram</item_name>
            <item_key>\\i2b2_PROC\i2b2\Procedures\PRC\ICD9 (Inpatient)\(87-99) Diagnostic and nonsurgical procedures\(p87) Diagnostic Radiology\(p87-5) Biliary tract x-ray\(p87-53) Intraoperative cholangio~\</item_key>
            <item_icon>LA</item_icon>
            <tooltip>Procedures \ ICD9 (Inpatient) \ Diagnostic and nonsurgical procedures \ Diagnostic Radiology \ Biliary tract x-ray \ Intraoperative cholangiogram</tooltip>
            <class>ENC</class>
            <item_is_synonym>false</item_is_synonym>
        </item>
    </panel>
</ns3:query_definition>

```

I want to find all patients who have had an intraoperative cholangiogram procedure performed at any time during their hospital stay, as recorded in the ICD9 (Inpatient) Diagnostic and nonsurgical procedures Diagnostic Radiology Biliary tract x-ray category. The specificity scale is set to 0, indicating that the query will return all patients who have this procedure in their record, regardless of the number of occurrences. The accuracy scale is set to 100, meaning the query is highly accurate and will only return patients with the exact procedure mentioned. The panel timing is set to ANY, meaning the procedure could have been performed at any time during the patient's stay. The panel number is 1, indicating that this is the first panel in the query. The class is ENC, which stands for "Encounter" in the i2b2 framework, and the icon is set to LA, which represents a lookup table. The invert value is 0, meaning the query will return only patients with the specified procedure. The query name is "Intraoperative @16:16:22" and the query timing is set to