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Heterogeneous data models and coding schemes for electronic health records present challenges for automated search across distributed data sources. This paper describes a loosely coupled software framework based on the terminology controlled approach to enable the interoperation between the search interface and heterogeneous data sources. Software components interoperate via common terminology service and abstract criteria model so as to promote component reuse and incremental system evolution. © 2012 European Federation for Medical Informatics and IOS Press. All rights reserved.

Original publication




Journal article


Studies in Health Technology and Informatics

Publication Date





519 - 523