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. 2019 Oct 8;27(1):109–118. doi: 10.1093/jamia/ocz165

Figure 2.

Figure 2.

Example tabular values and Entity-Relation diagram illustrating hypothetical Leaf concepts for laboratory tests, hematology-based tests, and platelet count tests. Each concept has both textual and programmatic representation components. The “@” symbols within the SqlSetWhere field denote ordinal positions to insert the SQL Set alias at query compilation time. Additional fields in the tables have been omitted for brevity.