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Number of results per hit in each database.
| Keywords | PubMed | Web of Science | Science Direct | Scopus |
|---|---|---|---|---|
| Palm oil and nervous system | 17 | 9 | 499 | 12 |
| Palm oil and brain | 15 | 64 | 1071 | 83 |
| Palm oil and neurodegenerative diseases | 4 | 5 | 135 | 7 |
| Palm oil and cognition | 2 | 2 | 112 | 12 |
| Total | 38 | 80 | 1817 | 114 |
