| http://www.w3.org/ns/prov#value | - Drug companies including Pfizer, Merck and Bristol Myers-Squibb are squeezed by rising research costs, the weak global economy and pressure from Europe, China and elsewhere to reduce drug prices.So, they are trying a new tactic to temporarily slow the loss of billions of dollars in sales to new generic competition.On a big drug, every day that you can delay the sales drop is a happy day at the dru
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