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APA Citation
Sparks, T. N., Griffin, E., Page, J., Pilliod, R., Shaffer, B. L., & Caughey, A. B. (2016). down syndrome: perinatal mortality risks with each additional week of expectant management†. Prenatal diagnosis, 36, 368–374. http://access.bl.uk/ark:/81055/vdc_100032397982.0x000046