title: Transvaginal ultrasound imaging for assessment of early pregnancy.
authors.forename: E S
authors.initials: ES
authors.lastname: Sills
authors.forename: D J
authors.initials: DJ
authors.lastname: Walsh
authors.forename: A P H
authors.initials: AP
authors.lastname: Walsh
mesh_terms: D042241:Early Diagnosis; D005260:Female; D006801:Humans; D011247:Pregnancy; D016216:Ultrasonography, Prenatal / Q000295:instrumentation / Q000379:methods*