title: Effects of frequent ultrasound during pregnancy.
authors.forename: M J
authors.initials: MJ
authors.lastname: Whittle
mesh_terms: D005260:Female; D006801:Humans; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D011247:Pregnancy; D012107:Research Design; D016216:Ultrasonography, Prenatal / Q000009:adverse effects*