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PRISMA: Preferred Reporting Items for Systematic Reviews and Meta-analyses; SANRA: Scale for the Assessment of Non-Systematic Review Articles.
| Type of study | Tools used |
| Randomized clinical trial | Cochrane bias tool assessment |
| Non-randomized clinical trials and observational studies | Newcastle-Ottawa tool |
| Systematic reviews | PRISMA checklist |
| Other studies | SANRA checklist |
