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Interobserver variability in fetal biometric measurements (BPD, OFD, and HC). (a)–(c) are the interobserver variability between two experts; and (d)–(f) are the differences between automatic and manual measurements, where BPD 1 denotes the expert 1, BPD 2 is expert 2, and BPD 3 denotes automatic measurements, same for OFD and HC.
