Cite
MLA Citation
Jennifer K. Y. Ko and Vincent Y. T. Cheung. “Time to Revisit the Human Chorionic Gonadotropin Discriminatory Level in the Management of Pregnancy of Unknown Location.” Journal of ultrasound in medicine, vol. 33, 2014, pp. 465–471. http://access.bl.uk/ark:/81055/vdc_100044905017.0x000054