Frontomaxillary facial angle at 11 + 0 to 13 + 6 weeks' gestation—reproducibility of measurements

To assess the intra‐ and interobserver reproducibility in the measurement of the frontomaxillary facial (FMF) angle at 11 + 0 to 13 + 6 weeks' gestation and to investigate the effect of deviations from the exact mid‐sagittal view on these measurements.

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