Butterfield, Joseph H Hypereosinophilic syndrome: endomyocardial biopsy versus echocardiography to diagnose cardiac involvement. [electronic resource] - Postgraduate medicine Jun 2017 - 517-523 p. digital Publication Type: Comparative Study; Journal Article ISSN: 1941-9260 Standard No.: 10.1080/00325481.2017.1317215 doi Subjects--Topical Terms: AdultAgedAged, 80 and overBiopsyEchocardiographyFemaleHeart Diseases--diagnostic imagingHumansHypereosinophilic Syndrome--diagnostic imagingMaleMiddle AgedRetrospective Studies