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Inclusion and exclusion criteria for eligibility
| Inclusion criteria | Exclusion criteria |
|---|---|
| Randomised controlled trials in patients diagnosed with ED | Animal studies, in vitro studies, in silico studies |
| Sole use of traditional or herbal medicine as intervention in at least one group | Prospective and observational studies, case reports, meta-analysis and narrative reviews, conference abstracts and proceedings |
| Articles reporting the IIEF | Non-English language |
