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Formulated question of the study based on PICOS
| Inclusion criteria | |
|---|---|
| P(Participants) | Endometriosis patient |
| I(Intervention) | Vitamin C/E/D with no limits on the dose,frequency and so on |
| C(Comparisons) | No supplementation or placebo |
| O(Outcomes) |
Primary:chronic pelvic pain,dysmenorrhea,dyspareunia; Secondary outcome: oxidative stress markers,fertility |
| S(Study type) | Randomized controlled trials(RCTs) |
