<membership value="conceptual"/><characteristic><code><text value="Defined by CodeableConcept"/></code><valueCodeableConcept><coding><system value="http://www.nlm.nih.gov/research/umls/rxnorm"/><code value="8410"/><display value="alteplase"/></coding></valueCodeableConcept><exclude value="true"/><description value="No alteplase"/></characteristic></Group></contained><extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg"><valueCode value="cds"/></extension><name value="NoAlteplase"/><title value="No Alteplase"/><status value="draft"/><publisher value="HL7 International / Clinical Decision Support"/><contact><telecom><system value="url"/><value value="http://www.hl7.org/Special/committees/dss"/></telecom></contact><description value="no alteplase"/><actual value="false"/><definition><reference><reference value="#Definition-Group"/></reference></definition><handling/></EvidenceVariable>

"No alteplase" is an intended exposure concept that may be used in expressing what an Evidence is about.