Table 2 Statistics on EPO cross-references
From: The epidemiology ontology: an ontology for the semantic annotation of epidemiological resources
| Resource | Number of cross-references |
|---|---|
| MSH | 4 |
| UMLS | 1 |
| NCI Thesaurus | 9 |
| SNOMED-CT | 2 |
| HPI | 10 |
| MDR | 7 |
| PATO | 1 |
| Total | 34 |