| Domain-Specific Synonym Expansion and Validation for Biomedical Information Retrieval (MultiText Experiments for TREC 2004) Recent countries visiting this post |  |
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| Domain-Specific Synonym Expansion and Validation for Biomedical Information Retrieval (MultiText Experiments for TREC 2004) Recent countries visiting this post | |
| 4 | United States |
| 3 | |
| 1 | Bulgaria |