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APA Citation
Schera, G., Morganelli, G., Infranco, A., Dall'Asta, A., di Pasquo, E., Frusca, T., & Ghi, T. (n.d.). eP07.23: First trimester ultrasound screening of open spina bifida (OSB): comparison between two different methods. Ultrasound in obstetrics & gynecology, 54, 275. http://access.bl.uk/ark:/81055/vdc_100126099909.0x000044