title: Pregnancy loss rates after midtrimester amniocentesis.
authors.forename: Lawrence
authors.initials: L
authors.lastname: Smith
mesh_terms: D000649:Amniocentesis / Q000009:adverse effects*; D005260:Female; D005313:Fetal Death / Q000209:etiology*; D006801:Humans; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D012107:Research Design; D018570:Risk Assessment / Q000379:methods