Milwaukee Journal Sentinel DALLAS - Heart attack patients who were treated with their own stem cells a few days after being hospitalized had significantly improved heart pumping ability, according to the largest, most rigorous clinical trial to date of the controversial therapy. The improvement seen with stem cells was better than with the best drugs now available and it appears the therapy actually repaired damage done during heart attacks, said lead author Volker Schachinger, a cardiologist at J.W. Goethe University and the Third Medical Clinic of Cardiology in Frankfurt, Germany. "It opens up a completely new way of treating heart...