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SNOMED CT: Browsing the Browsers
SNOMED CT is a complex ontology; sophisticated browsers are required to make it understandable and useful. We identified 23 SNOMED CT browsers that have been developed, and inspected 17. We enumerate and provide test criteria for a 'master list' of 143 browsing features supported by at least one inspected browser; future work will determine which of these features are implemented by individual browsers. Only 5 features were common to all 17 browsers; 89 were found in less than one third of browsers. We recommend that a core set of browsing features be defined and harmonized across browsers, particularly for text-to-concept search operations.