Associated Press
FILE- In this Thursday, July 12, 2012, file photo, Centrum multivitamins are shown on the packaging line at the Pfizer plant in Montreal Drugmaker Pfizer Inc. said Monday, Dec. , 2012, it is starting another round of layoffs, targeting U.S. sales representatives who promote Pfizer primary care medicines to doctors. The New York-based Viagra maker isn't giving details on how many salespeople it employs, how many will leave or when that will happen. Individual salespeople haven't been notified whether they'll be furloughed.(AP Photo/The Canadian Press, Graham Hughes, File)

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