[bioontology-support] NDDF Ontology

[Hari, Sekhar]

Hello there -

In the  NCBO BioPortal web site, I am unable to view the source vocabularies for National Drug Data File (NDDF) ontology. The following link shows no vocabularies : http://purl.bioontology.org/ontology/NDDF

Can you please look into this matter, and as soon as possible as I am trying to download the NDC ontology into I2B2?

Thanks,
Sekhar H.
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