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Top 5 keyword co-occurrences and centrality.
| Ranking | Frequency | Keywords | Centrality | Ranking | Centrality | Keywords | Frequency |
|---|---|---|---|---|---|---|---|
| 1 | 61 | alzheimers disease | 0.32 | 1 | 0.42 | mouse model | 16 |
| 2 | 39 | acupuncture | 0.25 | 2 | 0.32 | alzheimers disease | 61 |
| 3 | 36 | dementia | 0.25 | 3 | 0.26 | parkinsons disease | 6 |
| 4 | 23 | memory | 0.14 | 4 | 0.25 | acupuncture | 39 |
| 5 | 23 | hippocampus | 0.02 | 5 | 0.25 | dementia | 36 |
