[1] Stanford Univ, Med Ctr, Ctr Res Cardiovasc Intervent, Stanford, CA 94305 USA
[2] Heart Ctr Siegburg, Siegburg, Germany
[3] Cedars Sinai Med Ctr, Los Angeles, CA 90048 USA
[4] Natl Heart Ctr, Singapore, Singapore
[5] Cardiovasc Res Fdn, New York, NY USA