45.The first successful open-heart surgery was performed in 1953.

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surgery
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openheart
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successful
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first
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1953
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medical
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breakthrough
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heart
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operation
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procedure
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milestone
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medicine
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cardiovascular
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surgeon
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patient
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recovery
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hospital
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innovation
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history
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achievement
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health
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care
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treatment
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technology
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skill
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knowledge
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expertise
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lifesaving
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modern
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medicine