FILE - In this file photo Jan. 31, 2011, the Pfizer logo is displayed at the drug company's world headquarters in New York. Pfizer Inc., the world's largest maker of prescription drugs, is lowering its prices in Europe 4 to 6 percent, double the usual rate. The company doesn't expect the pricing pressure to let up anytime soon. (AP Photo/Mark Lennihan, File)

Associated Press
FILE - In this file photo Jan. 31, 2011, the Pfizer logo is displayed at the drug company's world headquarters in New York. Pfizer Inc., the world's largest maker of prescription drugs, is lowering its prices in Europe 4 to 6 percent, double the usual rate. The company doesn't expect the pricing pressure to let up anytime soon. (AP Photo/Mark Lennihan, File)
FILE - In this file photo Jan. 31, 2011, the Pfizer logo is displayed at the drug company's world headquarters in New York. Pfizer Inc., the world's largest maker of prescription drugs, is lowering its prices in Europe 4 to 6 percent, double the usual rate. The company doesn't expect the pricing pressure to let up anytime soon. (AP Photo/Mark Lennihan, File)
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