[1] Mem Sloan Kettering Canc Ctr, 1275 York Ave, New York, NY 10021 USA
[2] Weill Cornell Med Coll, New York, NY USA
[3] Duke Univ, Durham, NC USA
[4] Princess Margaret Canc Ctr, Toronto, ON, Canada
[5] Montefiore Med Ctr, New York, NY USA
[6] Univ Alabama Birmingham, Ctr Comprehens Canc, Birmingham, AL 35294 USA
[7] Washington Univ, Sch Med, Div Oncol, St Louis, MO USA
[8] McGill Univ, Montreal, PQ, Canada
[9] Ottawa Hosp, Ottawa, ON, Canada
[10] Meharry Med Coll, Nashville, TN 37208 USA
[11] Ohio State Univ, Ctr Comprehens Canc, Columbus, OH 43210 USA
[12] Tom Baker Canc Clin, Calgary, AB, Canada
[13] Montefiore Med Ctr, 111 E 210th St, Bronx, NY 10467 USA
[14] Univ Calif San Francisco, San Francisco, CA 94143 USA
[15] Columbia Univ, Med Ctr, New York, NY USA
[16] Columbia Univ, New York Presbyterian Hosp, Med Ctr, New York, NY USA
[17] Ohio State Univ, Ctr Comprehens Canc, Arthur G James Canc Hosp, Columbus, OH 43210 USA
[18] Brigham & Womens Hosp, 75 Francis St, Boston, MA 02115 USA