Health Level Seven. An application layer (hence `Level Seven`, from the OSI model) protocol suite for clinical and administrative data. Later versions define application messages using XML. There a range of EDI standards covering different application sectors.
See Health Level Seven.Found on http://www.encyclo.co.uk/local/20102
Health Level Seven [formatting and protocol standard]
Found on http://www.encyclo.co.uk/local/20895
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