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Journal of the American Society of Echocardiography > 2010 > 23 > 8 > 832-839
Journal of the American Society of Echocardiography > 2009 > 22 > 3 > 261-267
Journal of the American Society of Echocardiography > 2010 > 23 > 8 > 832-839
Journal of the American Society of Echocardiography > 2009 > 22 > 3 > 261-267