| Source Element | Usage | Target |
|---|---|---|
| Population | UseExtension | http://hl7.org/fhir/4.0/StructureDefinition/extension-Population |
| Population.id | UseExtensionFromAncestor | - |
| Population.extension | UseExtensionFromAncestor | - |
| Population.modifierExtension | UseExtensionFromAncestor | - |
| Population.age[x] | UseExtensionFromAncestor | - |
| Population.gender | UseExtensionFromAncestor | - |
| Population.race | UseExtensionFromAncestor | - |
| Population.physiologicalCondition | UseExtensionFromAncestor | - |