Cite
MLA Citation
E. Christodoulou et al.. “OC16.04: External validation of the M6 model and the two‐step triage system for pregnancies of unknown location.” Ultrasound in obstetrics & gynecology, vol. 54, n.d., p. 40. http://access.bl.uk/ark:/81055/vdc_100126103236.0x000041