Table 2 Number of records retrieved in scoping searches, May 2016
| Search type | Database | Number of records | Total number of records after duplicate removal |
|---|---|---|---|
| Search from map | Multiple | 227 | |
| Supplemental (2014) | WoSCC | 1728 | 2960 |
| Scopus | 1798 | ||
| Update (2015–2016) | WoSCC | 186 | |
| Scopus | 294 | ||
| All years up to 2016 | CAB abstracts | 3800 | |
| Google Scholar | First 1000 | ||
| Total | Approximately 8500 |