Table 1.
Databases searched with number of records retrieved.
| Database | Total results, n |
| ACL Anthology | Screened first 50 records from 2 searches |
| ACM Digital Library | 150 |
| CINAHL | 200 |
| Conference Proceedings Citation Index—Science | 84 |
| Conference Proceedings Citation Index—Social Science | 7 |
| Emerging Sources Citation Index | 41 |
| Google Scholar | Screened first 100 records from 2 searches |
| IEEE Xplore | 186 |
| Library and Information Science Abstracts | 120 |
| LISTA | 79 |
| OpenGrey | 0 |
| ProQuest dissertations and theses—United Kingdom and Ireland | 195 |
| PsycINFO | 72 |
| PubMed | 84 |
| Science Citation Index | 56 |
| Social Science Citation Index | 111 |
| Zetoc | 50 |