[1] Duke Univ, Med Ctr, Durham, NC USA
[2] Weill Cornell Med, New York, NY USA
[3] Dana Farber Canc Inst, Boston, MA 02115 USA
[4] Univ N Carolina, Chapel Hill, NC 27515 USA
[5] Univ Chicago, Chicago, IL 60637 USA
[6] Mayo Clin, Rochester, MN USA
[7] Univ Wisconsin, Sch Med & Publ Hlth, Madison, WI USA
[8] Univ Minnesota, Dept Med, Masonic Canc Ctr, Box 736 UMHC, Minneapolis, MN 55455 USA
[9] Mem Sloan Kettering Canc Ctr, 1275 York Ave, New York, NY 10021 USA
[10] Duke Univ, Inst Canc, Durham, NC USA
[11] Brigham & Womens Hosp, Dana Farber Canc Inst, 75 Francis St, Boston, MA 02115 USA
[12] Harvard Med Sch, Boston, MA 02115 USA