Research Article
Ultrasound Reference Chart Based on IVF Dates to Estimate Gestational Age at 6–9 weeks’ Gestation
Table 5
Mean differences in gestational ages derived from The Monash Chart compared to those predicted by the six existing reference charts.
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*n values are less than 3052 because exact dates were not given for a number of CRL lengths in these charts. Verburg et al. [9], for instance, only provide exact dates for CRL lengths at 5, 10, and 15 mm. |