From the Department of Renal Services (R.J.S.), Fletcher Allen Health Care, Burlington, Vt.; Division of Cardiology (M.K.N.), Hamilton Health Sciences General Division, Hamilton, Ontario, Canada; Department of Medicine (S.D.), Montreal Heart Institute, University of Montreal, Quebec, Canada; Cardiovascular Institute (S.K.S.), Mount Sinai Medical Center, New York, NY; Comprehensive Cardiovascular Center (C.S.S.), St. Vincent’s Medical Center Manhattan, New York, NY; Department of Medicine (R.E.K.),... (At 2007-06-26)