Of course, transplants are also expensive, with costs in the hundreds of thousands, or even millions of dollars per procedure, and additional significant costs throughout the years for the follow up care.

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The researchers found that, like mothers, fathers show a significant drop in cortisol levels during this procedure.

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Few players in history have recovered from this type of procedure once, let alone twice, casting significant doubt on the future of one of the best starting pitchers of this generation.

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The procedure still requires general anesthesia, and still has carries significant risk.

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