0 4 0 http://purl.obolibrary.org/obo/OBI_0000969 dose specification 'dose specification' SubClassOf http://purl.obolibrary.org/obo/IAO_0000033 http://purl.obolibrary.org/obo/PDRO/PDRO.owl#PDRO_0000123 dose quantification specification 'dose quantification specification' SubClassOf http://purl.obolibrary.org/obo/IAO_0000030 http://purl.obolibrary.org/obo/PDRO/PDRO.owl#PDRO_0000125 drug product quantification specification 'drug product quantification specification' SubClassOf 'dose quantification specification' http://purl.obolibrary.org/obo/PDRO/PDRO.owl#PDRO_0000124 active ingredient quantification specification 'active ingredient quantification specification' SubClassOf 'dose quantification specification'