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Number of records for each database
| Database | Date of search | Number of results |
|---|---|---|
| Philosopher's index | 29/11/2019 | 71 |
| Embase | 29/11/2019 | 230 |
| PubMed | 29/11/2019 | 132 |
| Ovid medline | 29/11/2019 | 660 |
| Web of science | 29/11/2019 | 2127 |
| Scopus | 29/11/2019 | 47 |
| Total | 3267 |
