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APA Citation
Drukker, L., Villar, J., Staines‐Urias, E., Barros, F., Carvalho, M., Munim, S., Kennedy, S., & Papageorghiou, A. (n.d.). oC24.03: *International charts of umbilical artery Doppler indices based on serial measurements from the INTERGROWTH‐21st project. Ultrasound in obstetrics & gynecology, 52, 57–58. http://access.bl.uk/ark:/81055/vdc_100090058908.0x00002c