Table 3.
Result of search by source
| Database/search engine | Number of records |
|---|---|
| PubMed Central | 314 |
| Embase | 283 |
| Web of Science | 239 |
| Medline (Ovid) | 214 |
| Oria, search engine for the University of Bergen | 100 |
| JSTOR | 21 |
| WHO website | 3 |
| Total records | 1174 |
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