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Selection of papers
| Database/search engine | # of papers identified | # of papers selected | Selection rate (%) |
|---|---|---|---|
| EBSCO | 997 | 21 | 2.1 |
| ProQuest | 31 | 0 | 0 |
| Forward search (Google Scholar) | 1788 | 10 | 0.6 |
| Backward search (Web of Science) | 1318 | 7 | 0.5 |
| Total | 4134 | 38 | 0.9 |
