Norman Wolmark, the chairman of oncology at Allegheny General Hospital in Pittsburgh, unveiled the results in a presentation that dripped with sarcasm.

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Allegheny General Hospital's Norman Wolmark, who conducted the trial, said the researchers found no evidence that Avastin was inducing faster or broader spread.

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"The differences that we're seeing there are among the greatest that I have seen for years and years and years, " says Norman Wolmark of Pittsburgh's Allegheny General Hospital, in response to the Herceptin results.

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