Pfizer, the world's largest drug maker, disclosed that, in 2009, it 
paid more than $35 million to 
<http://www.nytimes.com/2010/04/01/business/01payments.html?hpw>4,500 
doctors and 250 academic medical centers and research groups for 
consulting on its behalf or conducting clinical trials, according to 
The New York Times.



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