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Scientists Raise Concerns about Arthritis Drug Bextra

Scientists say the arthritis drug Bextra may pose increased risk of cardiovascular troubles. Bextra is related to Vioxx, which was pulled off the market in September for the same reason. Now, doctors worry that all related drugs could cause similar problems. Hear NPR's Richard Knox.

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Richard Knox
Since he joined NPR in 2000, Knox has covered a broad range of issues and events in public health, medicine, and science. His reports can be heard on NPR's Morning Edition, All Things Considered, Weekend Edition, Talk of the Nation, and newscasts.