| Source Element | Usage | Target |
|---|---|---|
| RatioRange | UseExtension | http://hl7.org/fhir/5.0/StructureDefinition/extension-RatioRange |
| RatioRange.id | UseExtensionFromAncestor | - |
| RatioRange.extension | UseExtensionFromAncestor | - |
| RatioRange.lowNumerator | UseExtensionFromAncestor | - |
| RatioRange.highNumerator | UseExtensionFromAncestor | - |
| RatioRange.denominator | UseExtensionFromAncestor | - |