title: Necessity or expectation?
authors.forename: Jeanne
authors.initials: J
authors.lastname: Mettner
mesh_terms: D000013:Congenital Abnormalities / Q000000981:diagnostic imaging*; D003363:Cost Control; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008318:Malpractice / Q000331:legislation & jurisprudence; D008403:Mass Screening / Q000706:statistics & numerical data*; D008910:Minnesota; D011247:Pregnancy; D011256:Pregnancy Outcome / Q000453:epidemiology*; D016032:Randomized Controlled Trials as Topic; D012680:Sensitivity and Specificity; D016216:Ultrasonography, Prenatal / Q000191:economics / Q000706:statistics & numerical data*