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22. Determination of pulmonary to systemic blood flow ratio in children by a simplified Doppler echocardiographic method. Cloez JL, Schmidt KG, Birk E, Silverman NH. J Am Coll Cardiol; 1988 Apr; 11(4):825-30. PubMed ID: 3351150 [Abstract] [Full Text] [Related]
35. [Hemodynamic determinants of late systolic reversed flow in the main pulmonary artery in pulmonary hypertension: a pulsed Doppler echocardiographic study]. Koizumi K, Tohda E, Kashida M, Isobe M, Kuwako K, Umeda T, Machii K. J Cardiogr; 1984 Aug 15; 14(2):359-74. PubMed ID: 6533197 [Abstract] [Full Text] [Related]