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Napolitano, R., V. Donadono, E. Ohuma, C. Knight, S. Wanyonyi, B. Kemp, T. Norris, and A. Papageorghiou. Scientific Basis for Standardization of Fetal Head Measurements by Ultrasound: A Reproducibility Study. John Wiley & Sons Ltd, 2016.

Napolitano, R., et al. Scientific Basis for Standardization of Fetal Head Measurements by Ultrasound: A Reproducibility Study. John Wiley & Sons Ltd, 2016.