Millions of Americans have been mistakenly told by theirphysicians that they suffer from a defective heart valve conditionthat places them at higher risk of potentially fatal heart diseaseand stroke.
The defect, called mitral valve prolapse, actually affects only 2percent to 3 percent of Americans rather than 10 percent to 35percent as had long been believed. It also was thought to be themost common cardiac abnormality in industrialized countries.
Moreover, even for …
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