[1] Brown Univ, Warren Alpert Med Sch, Providence, RI 02912 USA
[2] Cardiovasc Imaging Technol, Kansas City, MO USA
[3] Harvard Med Sch, Brigham & Womens Hosp, Boston, MA USA
[4] Columbia Univ, Irving Med Ctr, New York, NY USA
[5] New York Presbyterian Hosp, New York, NY USA
[6] Emory Univ, Sch Med, Atlanta, GA USA
[7] Duke Univ, Med Ctr, Durham, NC USA
[8] Deborah Heart & Lung Ctr, Dept Cardiol, Browns Mills, NJ USA
[9] Univ Pittsburgh, Dept Med, Pittsburgh, PA USA
[10] Univ Ottawa Heart Inst, Ottawa, ON, Canada