1. From Department of Cardiology, University of Athens, Hippokration Hospital, Athens, Greece (M.V., C.S., S.V., M.D., I.M.); Department of Computer Science, University of Houston, Houston, Tex (I.A.K., S.M.O.); Intravascular Imaging & Physiology, Cardiovascular Research Foundation, New York, NY (S.C.); and Association for Eradication of Heart Attack, Houston, Tex (M.N.).