Yoshikawa, J [Forefront of cardiac ultrasonography]. [electronic resource] - Nihon Naika Gakkai zasshi. The Journal of the Japanese Society of Internal Medicine Sep 1998 - 1910-5 p. digital Publication Type: Journal Article; Review ISSN: 0021-5384 Subjects--Topical Terms: Echocardiography, Three-DimensionalHumans