Cardiology Section, Veterans Affairs Medical Center and University of Colorado Health Sciences Center, Denver;
Faculty of Health Sciences, University of Linkoping, Linkoping,Sweden;
Hahnemann University, Philadelphia, Pa;
Cardiovascular Division,Brigham and Women's Hospital and Harvard Medical School, Boston, Mass;
Cardiac Medicine, National Heart and Lung Institute, Imperial College, London, England;
Division of Cardiology, San Francisco General Hospital and University of California, San Francisco;
Cardiology Department, Johann Wolfgang Goethe University, Frankfurt, Germany;
Division of Cardiology, St Louis University School of Medicine,St Louis, Mo;
Pfizer Pharmaceutical Research, New York, NY;
Pfizer Pharmaceutical Research, Ann Arbor, Mich;
