C.2.2.2.3 Universal Matching
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##### C.2.2.2.3 Universal Matching

If the value specified for a Key Attribute in a request is zero length, then all entities shall match this Attribute. An Attribute that contains a Universal Match specification in a C-FIND request provides a mechanism to request the selected Attribute value be returned in corresponding C-FIND responses.

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C.2.2.2.2 List of UID Matching | Home | C.2.2.2.4 Wild Card Matching