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APA Citation
Zdanowicz, J., Oldag, F., Hergert, B., Hecher, K., & de Sousa, M. T. (n.d.). vP45.19: Lend me your ear: intrapartum ultrasound to predict unfavourable delivery outcome using the fetal ear sign. Ultrasound in obstetrics & gynecology, 58, 290–291. http://access.bl.uk/ark:/81055/vdc_100144252880.0x000049