Each CLINICAL INVESTIGATION RESULT ITEM

	must be related to one and only one CLINICAL INTERVENTION
	may be a subdivision of one and only one CLINICAL INVESTIGATION RESULT ITEM
	may be subdivided into one or more CLINICAL INVESTIGATION RESULT ITEM
	may be related to one or more CLINICAL INVESTIGATION SERVICE PROVIDER
	may be for the clinical investigation classification classified by one and only one READ CLASSIFICATION
	may be classified by one and only one READ CLASSIFICATION
	may be related to one or more REFERENCE LIMIT