"I won't tell you that one or the other is dead because I don't know, " he said.

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You did this because 50 is just too young to drop dead of a heart attack, diabetes or a stroke.

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"Even if you accept the analysis, it doesn't mean everybody drops dead because of the drug, " he says.

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Whatever you do, don't assume that because a colleague doesn't like your idea it's dead.

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