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APA Citation
Sathasivam, N., Joung, S., Benzie, R., Peek, M., & Magotti, R. (n.d.). p02.01: HCG/PAPP: a ratio as a predictor of adverse outcomes. Ultrasound in obstetrics & gynecology, 42, 114–115. http://access.bl.uk/ark:/81055/vdc_100044084127.0x000001