Name Flags Card. Type Description & Constraints doco
. . Extension 0..* Extension External Reference
. . . extension 0 .. * Extension Slice: Unordered, Open by value:url
. . . extension:id 1..1 Extension An identifier such as ISBN:978-3-16-148410-0 or PMID:123456.
. . . . extension 0 .. 0
. . . . url 1..1 uri "id"
. . . . valueUrl 1..1 url
. . . extension:description 0..1 Extension An optional description of the external reference.
. . . . extension 0 .. 0
. . . . url 1..1 uri "description"
. . . . valueString 0 .. 1 string
. . . url 1 .. 1 uri "http://ga4gh.org/fhir/phenopackets/StructureDefinition/external-reference"
. . . value[x] 0 .. 0

doco Documentation for this format
<status value="draft" /> <date value="2019-12-20T18:15:04+00:00" /> <publisher value="Global Alliance for Genomics and Health" /> <contact> <telecom> <system value="other" /> <value value="http://ga4gh.org" /> <rank value="1" /> </telecom> </contact> <description value="This element encodes the evidence type using, for example the Evidence & Conclusion Ontology (ECO)." /> <fhirVersion value="4.0.1" /> <mapping> <identity value="rim" /> <uri value="http://hl7.org/v3" /> <name value="RIM Mapping" /> </mapping> <kind value="complex-type" /> <abstract value="false" /> <context> <type value="element" /> <expression value="Observation" /> </context> <context> <type value="extension" /> <expression value="http://ga4gh.org/fhir/phenopackets/StructureDefinition/evidence" /> </context> <type value="Extension" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" /> <derivation value="constraint" /> <snapshot /> <differential> <element id="Extension"> <path value="Extension" /> <short value="External Reference" /> <definition value="An external reference with an optional description." /> <min value="0" /> <max value="*" /> </element> <element id="Extension.extension"> <path value="Extension.extension" /> <slicing> <discriminator> <type value="value" /> <path value="url" /> </discriminator> <ordered value="false" /> <rules value="open" /> </slicing> </element> <element id="Extension.extension:id"> <path value="Extension.extension" /> <sliceName value="id" /> <short value="An identifier such as ISBN:978-3-16-148410-0 or PMID:123456." /> <min value="1" /> <max value="1" /> </element> <element id="Extension.extension:id.extension"> <path value="Extension.extension.extension" /> <min value="0" /> <max value="0" /> </element> <element id="Extension.extension:id.url"> <path value="Extension.extension.url" /> <min value="1" /> <max value="1" /> <fixedUri value="id" /> </element> <element id="Extension.extension:id.valueUrl"> <path value="Extension.extension.valueUrl" /> <min value="1" /> <max value="1" /> <type> <code value="url" /> </type> </element> <element id="Extension.extension:description"> <path value="Extension.extension" /> <sliceName value="description" /> <short value="An optional description of the external reference." /> <min value="0" /> <max value="1" /> </element> <element id="Extension.extension:description.extension"> <path value="Extension.extension.extension" /> <min value="0" /> <max value="0" /> </element> <element id="Extension.extension:description.url"> <path value="Extension.extension.url" /> <min value="1" /> <fixedUri value="description" /> </element> <element id="Extension.extension:description.valueString"> <path value="Extension.extension.valueString" /> <type> <code value="string" /> </type> </element> <element id="Extension.url"> <path value="Extension.url" /> <fixedUri value="http://ga4gh.org/fhir/phenopackets/StructureDefinition/external-reference" /> </element> <element id="Extension.value[x]"> <path value="Extension.value[x]" /> <min value="0" /> <max value="0" /> </element> </differential> </StructureDefinition>