title: Effects of frequent ultrasound during pregnancy.
authors.forename: D
authors.initials: D
authors.lastname: James
authors.forename: P
authors.initials: P
authors.lastname: Twining
mesh_terms: D015982:Bias; D001724:Birth Weight; D005260:Female; D006801:Humans; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D011247:Pregnancy; D011256:Pregnancy Outcome; D016216:Ultrasonography, Prenatal / Q000009:adverse effects*