Brown, D L A prospective evaluation of fetal pericardial fluid in 506 second-trimester low-risk pregnancies. [electronic resource] - Obstetrics and gynecology Apr 1998 - 641; author reply 642 p. digital Publication Type: Letter; Comment ISSN: 0029-7844 Subjects--Topical Terms: EchocardiographyFemaleFetal Diseases--diagnostic imagingHumansPericardial Effusion--diagnostic imagingPregnancyPregnancy OutcomePregnancy Trimester, SecondUltrasonography, Prenatal