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Each week the NewsHour's global health unit highlights what's new in the Twitterverse from the world of health and development. Follow us on Twitter at NewsHourGlobal. View the story "Twitter Round Up" on Storify]…

Photo by Bloomberg via Getty Images The Food and Drug Administration officially pulled the plug on its approval for the use of the drug Avastin in breast cancer treatment. There's simply no proof that the drug saves lives,…