[1] Univ Penn, Philadelphia, PA 19104 USA
[2] Univ Chicago, Chicago, IL 60637 USA
[3] Mem Sloan Kettering Canc Ctr, 1275 York Ave, New York, NY 10021 USA
[4] Univ Michigan, Ctr Comprehens Canc, Ann Arbor, MI 48109 USA
[5] Georgetown Univ Hosp, Washington, DC 20007 USA
[6] Vanderbilt Univ, Sch Med, Nashville, TN 37212 USA
[7] Emory Univ, Winship Canc Inst, Atlanta, GA 30322 USA
[8] Univ N Carolina, Lineberger Comprehens Canc Ctr, Chapel Hill, NC 27515 USA
[9] Massachusetts Gen Hosp, Boston, MA 02114 USA
[10] Wayne State Univ, Karmanos Canc Inst, Detroit, MI USA
[11] Johns Hopkins Univ, Sch Med, Baltimore, MD USA
[12] Univ Hosp Case Med Ctr, Cleveland, OH USA
[13] Univ Texas MD Anderson Canc Ctr, Houston, TX 77030 USA
[14] Sanford Hlth, Sioux Falls, SD USA
[15] Merck & Co Inc, Kenilworth, NJ USA
[16] Harvard Med Sch, Dana Farber Canc Inst, Boston, MA 02115 USA