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Inclusion and exclusion criteria.
| Criteria | Inclusion | Exclusion |
|---|---|---|
| Language | English | Non-English |
| Type of article | Original research article published in a peer reviewed journal or grey literature | Any publication that was not original research, peer-reviewed journal article and/or unpublished; for example, PhD theses and reports |
| Study focus | Using live P. Gingivalis bacteria | Using bacteria other than P. Gingivalis, using LPS from P.; Gingivalis, using only the ligature method |
