- 1. IE12
- [ ] (UMLS (CSP) C0599803) =Amino Acid, Peptide, or Protein; Biologically Active Substance
| - 2. IETF RFC 1766
- [Language identifiers as defined by IETF RFC 1766: Tags for the Identification of Languages, or its successor on the IETF Standards Track. The biblio ref for RFC 1766 is: IETF (Internet Engineering Task Force), RFC 1766: Tag ( HL7V3.0 )] (UMLS (HL7) C1553867) =Intellectual Product =CodeSystem;
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