| Study | Reason for exclusion |
|---|---|
| Kably Ambe 1994 | This is a non‐randomised trial |
| Raine‐Fenning 2010 | The intervention comprises estradiol measurement plus two‐dimensional ultrasound versus estradiol measurement plus SonoAVC (three‐dimensional ultrasound) and does not satisfy the inclusion criteria of the review |
| Schindler 2001 | This is a quasi‐randomised trial in which women were randomised by month of birth |
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