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. 2016 Jun 13;11:92. doi: 10.1186/s13019-016-0488-x

Fig. 2.

Fig. 2

Changes in the cardiothoracic ratio (a) and ejection fraction (b) before and after creating a thoracoscopic pericardial window (TPW). The data show significant changes after the TPW was created as evaluated by the paired t-test (p < 0.001 and p = 0.012, respectively)