description: This observation follows the target observation (e.g. timed tests such as Glucose Tolerance Test).
package_name: hl7.fhir.r5.examples
derivation: constraint
name: sequelTo
type: Extension
elements:
  extension: {index: 0}
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/observation-sequelTo'}
    index: 1
  value:
    choices: [valueReference]
    index: 3
  valueReference:
    type: Reference
    choiceOf: value
    refers: ['http://hl7.org/fhir/StructureDefinition/Observation']
    index: 4
package_version: 5.0.0-ballot
extensions: {}
class: extension
kind: complex-type
url: http://hl7.org/fhir/StructureDefinition/observation-sequelTo
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 5.0.0-ballot
required: [valueReference, value]