f:Ratio
numerator: minimum cardinality of 'numerator' is 1
denominator: minimum cardinality of 'denominator' is 1
Ratio
All FHIR elements must have a @value or children (inherited)
Numerator and denominator SHALL both be present, or both are absent. If both are absent, there SHALL be some extension present (inherited)
Ratio.extension
All FHIR elements must have a @value or children
Must have either extensions or value[x], not both
Ratio.numerator
All FHIR elements must have a @value or children (inherited)
If a code for the unit is present, the system SHALL also be present (inherited)
The comparator is not used on a SimpleQuantity (inherited)
Ratio.denominator
All FHIR elements must have a @value or children (inherited)
If a code for the unit is present, the system SHALL also be present (inherited)
The comparator is not used on a SimpleQuantity (inherited)