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. 2007 Jan 19;7:2. doi: 10.1186/1471-2431-7-2

Table 1.

Ante-natal ultrasonography findings at 26 weeks after LMP

Twin A Twin B
Presentation Cephalic Breech
Placenta Anterior Posterior
Biparital diameter 65 mm 77 mm
Femur Length 49 mm 48 mm
Head circumference 235 mm 276 mm
Gestation 26 weeks +/- 2 weeks 30 weeks +/- 2 weeks