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Andrew Pollack — The FDA commissioner, Dr. Margaret A. Hamburg, said that clinical trials had shown that the drug was not helping breast cancer patients to live longer or to meaningfully control their tumors, but did expose them to potentially serious side effects like severe high blood pressure and…

Debra Sherman — (Reuters) - Health regulators are investigating a rare but potentially serious problem with a newer class of heart stents that causes the tiny tubular devices made of wire mesh to shrink, or lengthen, after implantation.

The problem appears to occur most frequently in the Promus…