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12. Cardiac ultrasonography. A review of current applications. Gramiak R, Shah PM. Radiol Clin North Am; 1971 Dec 04; 9(3):469-90. PubMed ID: 4942998 [No Abstract] [Full Text] [Related]
14. Left ventricular power in man. Russell RO, Porter CM, Frimer M, Dodge HT. Am Heart J; 1971 Jun 04; 81(6):799-808. PubMed ID: 4253442 [No Abstract] [Full Text] [Related]