title: Concerns about differential use of LMP in ultrasound-based EDC estimation.
authors.forename: Wendy Brooks
authors.initials: WB
authors.lastname: Barr
mesh_terms: D005260:Female; D005865:Gestational Age; D006801:Humans; D008597:Menstrual Cycle / Q000502:physiology*; D011247:Pregnancy; D011264:Pregnancy Trimesters; D016032:Randomized Controlled Trials as Topic; D016216:Ultrasonography, Prenatal