[1] City Hope Natl Med Ctr, Duarte, CA 91010 USA
[2] Univ Maryland, Med Ctr, Baltimore, MD 21201 USA
[3] Hackensack Univ, Med Ctr, John Theurer Canc Ctr, Hackensack, NJ USA
[4] Univ Michigan, Ann Arbor, MI 48109 USA
[5] Med Coll Wisconsin, Milwaukee, WI 53226 USA
[6] Yale Univ, Sch Med, New Haven, CT USA
[7] Merck & Co Inc, Upper Gwynedd, PA USA
[8] Univ Texas MD Anderson Canc Ctr, Houston, TX 77030 USA