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| Methods | ||
| Participants | See Rodríguez 1993 for 48 women; see Díaz 1988a for the 236 cases | |
| Interventions | ||
| Outcomes | ||
| Notes | Data given in other publications | |
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Allocation concealment (selection bias) | Unclear risk | D ‐ Not used |
