Evaluation and performance of the β-hCG discriminatory zone and targeted ultrasound findings for early pregnancy diagnosis in a high-risk population: a retrospective cohort study at a US safety-net hospital.
Cherouveim P, Tuli S, Cetin E, Garner J, Fayyaz T, Soylu M, Lachance J, Merida Reyes MA, Kobold R, Akinpeloye A
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