Standards for health information systems: GELLO GELLO summary Object-oriented query and logical expression language to provide an interface between clinical information and data and electronic clinical decision support functionality. GELLO is based on the Object Constraint Language of the Object Management Group location USA sponsor organisation HL7. Co-ordinated by the HL7 Clinical Decision Support Technical Committee (CDSTC). adoption date Approved as standard by HL7 in January 2005 and by ANSI as an international standard in May 2005. clinical domains N/A keywords Query and expression language, clinical decision support, object-oriented data model, virtual medical record, Object Constraint Language. developed by Decision Systems Group, Harvard Medical School and the The InterMed Collaboratory in association with the HL7 Clinical Decision Support Technical Committee links    The InterMed Collaboratory    GLIF - the Guideline Interchange Format    GLIF [OC] - includes information on GELLO acknowledgements Margarita Sordo Sànchez, Decision Systems Group, Harvard Medical School page history Entry on OpenClinical 24 February 2005 Last main update: 14 September 2005

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