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Am J Obstet Gynecol. 2002 Mar;186(3):433-7. doi: 10.1067/mob.2002.120487.
How does early ultrasound scan estimation of gestational age lead to higher rates of preterm birth?
Yang H, Kramer MS, Platt RW, Blondel B, Bréart G, Morin I, Wilkins R, Usher R
Research Library
The largest, free collection of academic references related to restorative reproductive medicine— made possible by donations.
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