[1] Columbia Univ, New York, NY USA
[2] XDx Inc, Res & Dev, San Francisco, CA USA
[3] Cleveland Clin Fdn, Cleveland, OH 44195 USA
[4] Drexel Univ, Coll Med, Philadelphia, PA 19104 USA
[5] Stanford Univ, Palo Alto, CA 94304 USA
[6] Univ Calif Los Angeles, Los Angeles, CA USA
[7] Univ Maryland, Med Ctr, College Pk, MD 20742 USA
[8] Univ Pittsburgh, Med Ctr, Pittsburgh, PA USA