Early Merck research may have raised similar issues, according to James Stein at the University of Wisconsin.

FORBES: Why Merck's Niacin Failure Will Scare Drug Researchers

The data "are not definitive at all, " says James Stein, a cardiologist at the University of Wisconsin, Madison.

FORBES: Another Storm Brewing For Vytorin

But one panelist, James Stein, a cardiac imaging expert at the University of Wisconsin, disagreed with assertions made in the document.

FORBES: Magazine Article