[1] Dana Farber Canc Inst, Boston, MA 02115 USA
[2] Virginia Oncol Associates, Norfolk, VA USA
[3] Augusta Oncol Associates, Augusta, GA USA
[4] Missouri Canc Associates, Columbia, MO USA
[5] QEII Hlth Sci Ctr, Halifax, NS, Canada
[6] Virginia Canc Specialists PC, Winchester, VA USA
[7] GlaxoSmithKline Oncol, Collegeville, PA USA