* Health and Medical News:Top Obamacare official Tavenner calls it quits

Top U.S. health official Marilyn Tavenner resigned as administrator of the Centers for Medicare and Medicaid Services Friday.



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via Health and Medical NewsHealth and Medical News Pfizer Inc has already had its takeover overtures rebuffed three times by rival AstraZeneca Plc, but investors in the U.S. drugmaker say it can tolerate a little more rejection before going hostile with the deal. AstraZeneca turned down a sweeten...

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