HL7 HL7 (Health Level Seven International) HL7 HL7 HL7 HL7 HL7 Health Level Seven International (HL7) HL7 (Health Level Seven International) Health Level Seven International (HL7) HL7 HL7 Health Level Seven International HL7 Health Level Seven International HL7 (Health Level Seven International) Health Level Seven International (HL7) HL7