Optional_OptionalcountryThe country or countries for which the strength range applies
OptionalextensionAdditional content defined by implementations
OptionalidUnique id for inter-element referencing
OptionalmeasurementFor when strength is measured at a particular point or distance
OptionalmodifierExtensions that cannot be ignored even if unrecognized
Strength expressed in terms of a reference substance
OptionalstrengthStrength expressed in terms of a reference substance
OptionalsubstanceRelevant reference substance
For when strength is measured at a particular point or distance