Fig. 1From: Semantic modelling of common data elements for rare disease registries, and a prototype workflow for their deployment over registry dataConceptual diagram of the overall SIO model to be applied to the CDEs. It is centred around five primary elements – identifiers, entities (physical and information-content), roles, processes, and attributes. In the diagram, we provide hypothetical examples of the specific ontological types that might be associated with each elementBack to article page