Institution: | a Columbia University Medical Center, New York, NY b Cardiovascular Research Foundation, New York, NY c William Beaumont Hospital, Royal Oak, MI d Mid Carolina Cardiology, Charlotte, NC e Hospital Gregorio Maranon, Madrid, Spain f Duke Clinical Research Institute, Durham, NC g Virginia Beach General Hospital, Virginia Beach, VA h Ospedali Riuniti di Bergamo, Bergamo, Italy i Moses Cone Memorial Hospital, Greensboro, NC j Washington Adventist Hospital, Tacoma Park, MD |