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![The prognostic impact of frailty in patients undergoing percutaneous mitral valve repair](https://image.oaes.cc/c41231de-c46a-4bec-bbe3-27acb33b6e44/3703.fig.1.jpg)
Figure 1. Changes in NYHA functional class according to frailty status. NYHA: New York Heart Association
Figure 1. Changes in NYHA functional class according to frailty status. NYHA: New York Heart Association
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