"Why this wasn't made available at the panel meeting a week ago, I have no idea, " says William Hiatt, the University of Colorado vascular medicine specialist who chaired the panel.

FORBES: Bayer's Big Mistake

"If people come in and say my chest hurts, that gets attention, but if they say my leg hurts when I walk a couple of blocks, most doctors don't think that is a big deal, " says William Hiatt, professor of cardiovascular research at the University of Colorado School of Medicine and chairman of the American Heart Association's Peripheral Vascular Disease Council.

WSJ: Peripheral Artery Disease (PAD) - When Achy Legs Are a Warning