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APA Citation
de Almeida, J. R. F. P., Dória, M., Varejão, A., Bartosch, C., & Matias, A. (n.d.). vP52.30: Preterm birth screening using routine transvaginal ultrasound: a retrospective study. Ultrasound in obstetrics & gynecology, 56, 303. http://access.bl.uk/ark:/81055/vdc_100112047932.0x00002b