HL7 and patient records in RDF/OWL?

Hi all

I'm looking into use of RDF for healthcare apps, specifically 
patient records. I'd be interested to hear this group's sense of the
current state of the art (eg. HL7-in-RDF etc). Was this discussed
much at the recent F2F meeting? Anyone interested in collaboration, 
testing and interop?

cheers,

Dan