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APA Citation
Kyriacou, C., Bobdiwala, S., Elkington, I., Farren, J., Mitchell‐Jones, N., Ayim, F., Chohan, B., Guha, S., Kirk, E., Abughazza, O., Al‐Memar, M., Vathanan, V., Gould, D., Stalder, C., Timmerman, D., & Bourne, T. (n.d.). oC16.01: The role of human chorionic gonadotrophin and transvaginal ultrasound in pregnancies of unknown location beyond 48 hours. Ultrasound in obstetrics & gynecology, 54, 38–39. http://access.bl.uk/ark:/81055/vdc_100126103978.0x000032