```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>Esophageal refl@22:24:32</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>5</hlevel>
            <item_name>Esophageal reflux</item_name>
            <item_key>\\i2b2_DIAG\i2b2\Diagnoses\Digestive system (520-579)\(530) Diseases of esophagus\(530-8) Other specified disorders~\(530-81) Esophageal reflux\</item_key>
            <item_icon>FA</item_icon>
            <tooltip>Diagnoses \ Digestive system \ Diseases of esophagus \ Other specified disorders of esophagus \ Esophageal reflux</tooltip>
            <class>ENC</class>
            <item_is_synonym>true</item_is_synonym>
        </item>
    </panel>
</ns4:query_definition>

```

I want to find all patients who have been diagnosed with Esophageal reflux, using the i2b2 query builder with the specific encoding and timing settings, and with a specificity scale of 0 and accuracy scale of 100. The query will be applied to the Diagnoses section, under the Digestive system, Diseases of esophagus, and Other specified disorders of esophagus categories, with the item key being (530-81) Esophageal reflux.