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APA Citation
Johansen, M., Oldenburg, A., Rosthoej, S., Maxild, J., Rode, L., & Tabor, A. (n.d.). oC22.02: Crown–rump length discordance in first trimester; a predictor of adverse outcome in dichorionic pregnancies?. Ultrasound in obstetrics & gynecology, 42, 44. http://access.bl.uk/ark:/81055/vdc_100043917216.0x000001