1. From the Masonic Medical Research Laboratory (C.A.), Utica, NY; Cardiovascular Center (P.B.), OLV Hospital, Aalst, Belgium; Cardiovascular Institute (J.B.), Hospital Clinic, University of Barcelona, Spain; National Cardiovascular Center (R.B.), Osaka, Japan; eResearchTechnology, Inc (I.G.), Bridgewater, NJ; and Cardiology Service (A.R.P.R.), Hemodynamic Laboratory, Neomater Hospital, São Paulo, Brazil.