[1] Columbia Univ, Div Cardiol, Dept Med, Coll Phys & Surg, New York, NY 10032 USA
[2] Cleveland Clin, Dept Cardiovasc Med, Cleveland, OH 44106 USA
[3] Stanford Univ, Dept Cardiovasc Med, Stanford, CA 94305 USA
[4] Fairview Univ, Div Cardiovasc, Minneapolis, MN USA
[5] Drexel Univ, Div Cardiol, Philadelphia, PA 19104 USA
[6] Univ Calif Los Angeles, Div Clin Fac Med, Los Angeles, CA USA
[7] Univ Pittsburgh, Pittsburgh, PA USA
[8] Columbia Univ, Dept Pathol, New York, NY 10032 USA
[9] Univ Maryland, Div Cardiol, Baltimore, MD 21201 USA
[10] Med Univ Vienna, Dept Surg, Vienna, Austria