This document specifies a set of representational primitives and semantic relations required for an unambiguous representation of explicit time-related expressions in health informatics. This document does not introduce or force a specific ontology of time, nor does it force the use of a fixed representation scheme for such an ontology. Rather this document provides a set of principles for syntactic and semantic representation that allow the comparability of specific ontologies on time, and the exchange of time-related information that is expressed explicitly. This document is applicable to:1) developers of medical information systems in which the need is f
EN 12381:2005 history
2005EN 12381:2005 Health informatics - Time standards for healthcare specific problems