ACOG committee opinion. New ultrasound output display standard. Number 180, November 1996. Committee on Obstetric Practice. American College of Obstetricians and Gynecologists.
D003626:Data Display / Q000592:standards*; D005260:Female; D006801:Humans; D011247:Pregnancy; D016216:Ultrasonography, Prenatal / Q000295:instrumentation* / Q000379:methods / Q000592:standards*; D014481:United States