f:Identifier
type: minimum cardinality of 'type' is 1
system: minimum cardinality of 'system' is 1
value: minimum cardinality of 'value' is 1
Identifier
All FHIR elements must have a @value or children (inherited)
Identifier.extension
All FHIR elements must have a @value or children
Must have either extensions or value[x], not both
Identifier.use
All FHIR elements must have a @value or children (inherited)
Identifier.type
All FHIR elements must have a @value or children (inherited)
Identifier.system
All FHIR elements must have a @value or children (inherited)
Identifier.value
All FHIR elements must have a @value or children (inherited)
Identifier.period
All FHIR elements must have a @value or children (inherited)
Identifier.assigner
All FHIR elements must have a @value or children (inherited)