> > Bull or Bear? Vote in Our Poll They published their findings in the Canadian Medical Association Journal. The Food and Drug Administration recently placed a warning in the information that comes with the drug about additional cardiovascular risks for people already suffering from heart disease, according to a report by the BBC. A Pfizer representative said the company "disagreed with the interpretation of the data" used by the researchers," the BBC report said. Shares of Pfizer closed Friday up 15 cents at $20.75. U.S. stock markets were closed Monday in observance of Independence Day.