regimen being subclass of medication adminsitration

[harryhoch]

we have regimen subclass of ... hasMedicationAdministrationDuration

but domain of hasMedicationAdministrationDuration is MedicationAdministration

so Regimen must be a MedicationAdministration.

Consider associating the duration directly with the medicationAdministration, or changing the domain of hasMedicationAdministrationDuration to be more general.